Home / 917,089,573.42-1,265,636,744.40-690,623,142.76

Finding the Fourth Proportional to 917,089,573.42, 1,265,636,744.40 and 690,623,142.76

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Solution

The fourth proportional to 917,089,573.42, 1,265,636,744.40 and 690,623,142.76 is: 953,099,949.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,089,573.42 : 1,265,636,744.40 = 690,623,142.76 : x
  2. Step 2: Convert to fraction form
    917,089,573.42/1,265,636,744.40 = 690,623,142.76/x
  3. Step 3: Cross multiply
    917,089,573.42x = 1,265,636,744.40 × 690,623,142.76
  4. Step 4: Simplify right side
    917,089,573.42x = 874,078,026,010,062,848
  5. Step 5: Solve for x
    x = 874,078,026,010,062,848/917,089,573.42
  6. Step 6: Final answer
    x = 953,099,949.39

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Half scale
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Double scale
Find fourth proportional to 917,089,574.42, 1,265,636,745.78 and 690,623,143.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.