Home / 981,361,286.60-1,470,791,549.10-521,519,750.60

Finding the Fourth Proportional to 981,361,286.60, 1,470,791,549.10 and 521,519,750.60

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Solution

The fourth proportional to 981,361,286.60, 1,470,791,549.10 and 521,519,750.60 is: 781,615,142.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,361,286.60 : 1,470,791,549.10 = 521,519,750.60 : x
  2. Step 2: Convert to fraction form
    981,361,286.60/1,470,791,549.10 = 521,519,750.60/x
  3. Step 3: Cross multiply
    981,361,286.60x = 1,470,791,549.10 × 521,519,750.60
  4. Step 4: Simplify right side
    981,361,286.60x = 767,046,841,871,219,584
  5. Step 5: Solve for x
    x = 767,046,841,871,219,584/981,361,286.60
  6. Step 6: Final answer
    x = 781,615,142.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.