Home / 724,987.40-1,000,591.62-521,711.24

Finding the Fourth Proportional to 724,987.40, 1,000,591.62 and 521,711.24

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Solution

The fourth proportional to 724,987.40, 1,000,591.62 and 521,711.24 is: 720,039.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,987.40 : 1,000,591.62 = 521,711.24 : x
  2. Step 2: Convert to fraction form
    724,987.40/1,000,591.62 = 521,711.24/x
  3. Step 3: Cross multiply
    724,987.40x = 1,000,591.62 × 521,711.24
  4. Step 4: Simplify right side
    724,987.40x = 522,019,894,803.81
  5. Step 5: Solve for x
    x = 522,019,894,803.81/724,987.40
  6. Step 6: Final answer
    x = 720,039.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.