Home / 521,605,009.20-782,407,513.80-514,802,564.40

Finding the Fourth Proportional to 521,605,009.20, 782,407,513.80 and 514,802,564.40

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Solution

The fourth proportional to 521,605,009.20, 782,407,513.80 and 514,802,564.40 is: 772,203,846.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,605,009.20 : 782,407,513.80 = 514,802,564.40 : x
  2. Step 2: Convert to fraction form
    521,605,009.20/782,407,513.80 = 514,802,564.40/x
  3. Step 3: Cross multiply
    521,605,009.20x = 782,407,513.80 × 514,802,564.40
  4. Step 4: Simplify right side
    521,605,009.20x = 402,785,394,510,068,352
  5. Step 5: Solve for x
    x = 402,785,394,510,068,352/521,605,009.20
  6. Step 6: Final answer
    x = 772,203,846.60

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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.