Home / 521,669.80-781,338.30-402,956.20

Finding the Fourth Proportional to 521,669.80, 781,338.30 and 402,956.20

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Solution

The fourth proportional to 521,669.80, 781,338.30 and 402,956.20 is: 603,533.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,669.80 : 781,338.30 = 402,956.20 : x
  2. Step 2: Convert to fraction form
    521,669.80/781,338.30 = 402,956.20/x
  3. Step 3: Cross multiply
    521,669.80x = 781,338.30 × 402,956.20
  4. Step 4: Simplify right side
    521,669.80x = 314,845,112,282.46
  5. Step 5: Solve for x
    x = 314,845,112,282.46/521,669.80
  6. Step 6: Final answer
    x = 603,533.33

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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.