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Finding the Fourth Proportional to 724,354.53, 999,607.55 and 402,068.49

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Solution

The fourth proportional to 724,354.53, 999,607.55 and 402,068.49 is: 554,853.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,354.53 : 999,607.55 = 402,068.49 : x
  2. Step 2: Convert to fraction form
    724,354.53/999,607.55 = 402,068.49/x
  3. Step 3: Cross multiply
    724,354.53x = 999,607.55 × 402,068.49
  4. Step 4: Simplify right side
    724,354.53x = 401,910,696,210.76
  5. Step 5: Solve for x
    x = 401,910,696,210.76/724,354.53
  6. Step 6: Final answer
    x = 554,853.57

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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.