Home / 917,089,579.42-1,265,636,752.68-690,623,148.76

Finding the Fourth Proportional to 917,089,579.42, 1,265,636,752.68 and 690,623,148.76

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Solution

The fourth proportional to 917,089,579.42, 1,265,636,752.68 and 690,623,148.76 is: 953,099,957.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,089,579.42 : 1,265,636,752.68 = 690,623,148.76 : x
  2. Step 2: Convert to fraction form
    917,089,579.42/1,265,636,752.68 = 690,623,148.76/x
  3. Step 3: Cross multiply
    917,089,579.42x = 1,265,636,752.68 × 690,623,148.76
  4. Step 4: Simplify right side
    917,089,579.42x = 874,078,039,322,242,944
  5. Step 5: Solve for x
    x = 874,078,039,322,242,944/917,089,579.42
  6. Step 6: Final answer
    x = 953,099,957.67

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Double scale
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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.