Home / 724,426.20-999,660.78-402,136.20

Finding the Fourth Proportional to 724,426.20, 999,660.78 and 402,136.20

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Solution

The fourth proportional to 724,426.20, 999,660.78 and 402,136.20 is: 554,921.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,426.20 : 999,660.78 = 402,136.20 : x
  2. Step 2: Convert to fraction form
    724,426.20/999,660.78 = 402,136.20/x
  3. Step 3: Cross multiply
    724,426.20x = 999,660.78 × 402,136.20
  4. Step 4: Simplify right side
    724,426.20x = 401,999,787,358.24
  5. Step 5: Solve for x
    x = 401,999,787,358.24/724,426.20
  6. Step 6: Final answer
    x = 554,921.66

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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.