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Finding the Fourth Proportional to 724,541.84, 999,520.40 and 509,800.40

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Solution

The fourth proportional to 724,541.84, 999,520.40 and 509,800.40 is: 703,280.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,541.84 : 999,520.40 = 509,800.40 : x
  2. Step 2: Convert to fraction form
    724,541.84/999,520.40 = 509,800.40/x
  3. Step 3: Cross multiply
    724,541.84x = 999,520.40 × 509,800.40
  4. Step 4: Simplify right side
    724,541.84x = 509,555,899,728.16
  5. Step 5: Solve for x
    x = 509,555,899,728.16/724,541.84
  6. Step 6: Final answer
    x = 703,280.16

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Similar ratio
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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.