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Finding the Fourth Proportional to 521,601.30, 781,235.55 and 402,887.70

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Solution

The fourth proportional to 521,601.30, 781,235.55 and 402,887.70 is: 603,430.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,601.30 : 781,235.55 = 402,887.70 : x
  2. Step 2: Convert to fraction form
    521,601.30/781,235.55 = 402,887.70/x
  3. Step 3: Cross multiply
    521,601.30x = 781,235.55 × 402,887.70
  4. Step 4: Simplify right side
    521,601.30x = 314,750,193,897.74
  5. Step 5: Solve for x
    x = 314,750,193,897.74/521,601.30
  6. Step 6: Final answer
    x = 603,430.62

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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.