Home / 621,721.12-933,514.80-355,781.92

Finding the Fourth Proportional to 621,721.12, 933,514.80 and 355,781.92

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Solution

The fourth proportional to 621,721.12, 933,514.80 and 355,781.92 is: 534,206.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,721.12 : 933,514.80 = 355,781.92 : x
  2. Step 2: Convert to fraction form
    621,721.12/933,514.80 = 355,781.92/x
  3. Step 3: Cross multiply
    621,721.12x = 933,514.80 × 355,781.92
  4. Step 4: Simplify right side
    621,721.12x = 332,127,687,892.42
  5. Step 5: Solve for x
    x = 332,127,687,892.42/621,721.12
  6. Step 6: Final answer
    x = 534,206.86

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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.