Home / 728,428.80-1,092,643.20-413,500.80

Finding the Fourth Proportional to 728,428.80, 1,092,643.20 and 413,500.80

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Solution

The fourth proportional to 728,428.80, 1,092,643.20 and 413,500.80 is: 620,251.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,428.80 : 1,092,643.20 = 413,500.80 : x
  2. Step 2: Convert to fraction form
    728,428.80/1,092,643.20 = 413,500.80/x
  3. Step 3: Cross multiply
    728,428.80x = 1,092,643.20 × 413,500.80
  4. Step 4: Simplify right side
    728,428.80x = 451,808,837,314.56
  5. Step 5: Solve for x
    x = 451,808,837,314.56/728,428.80
  6. Step 6: Final answer
    x = 620,251.20

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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.