Home / 724,601.50-999,981.30-402,311.64

Finding the Fourth Proportional to 724,601.50, 999,981.30 and 402,311.64

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Solution

The fourth proportional to 724,601.50, 999,981.30 and 402,311.64 is: 555,207.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,601.50 : 999,981.30 = 402,311.64 : x
  2. Step 2: Convert to fraction form
    724,601.50/999,981.30 = 402,311.64/x
  3. Step 3: Cross multiply
    724,601.50x = 999,981.30 × 402,311.64
  4. Step 4: Simplify right side
    724,601.50x = 402,304,116,772.33
  5. Step 5: Solve for x
    x = 402,304,116,772.33/724,601.50
  6. Step 6: Final answer
    x = 555,207.40

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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.