Home / 921,977,283.66-1,272,338,520.78-504,280,637.34

Finding the Fourth Proportional to 921,977,283.66, 1,272,338,520.78 and 504,280,637.34

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Solution

The fourth proportional to 921,977,283.66, 1,272,338,520.78 and 504,280,637.34 is: 695,912,677.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,977,283.66 : 1,272,338,520.78 = 504,280,637.34 : x
  2. Step 2: Convert to fraction form
    921,977,283.66/1,272,338,520.78 = 504,280,637.34/x
  3. Step 3: Cross multiply
    921,977,283.66x = 1,272,338,520.78 × 504,280,637.34
  4. Step 4: Simplify right side
    921,977,283.66x = 641,615,680,171,171,200
  5. Step 5: Solve for x
    x = 641,615,680,171,171,200/921,977,283.66
  6. Step 6: Final answer
    x = 695,912,677.61

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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.