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Finding the Fourth Proportional to 724,602, 999,981.99 and 402,312.14

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Solution

The fourth proportional to 724,602, 999,981.99 and 402,312.14 is: 555,208.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,602 : 999,981.99 = 402,312.14 : x
  2. Step 2: Convert to fraction form
    724,602/999,981.99 = 402,312.14/x
  3. Step 3: Cross multiply
    724,602x = 999,981.99 × 402,312.14
  4. Step 4: Simplify right side
    724,602x = 402,304,889,358.45
  5. Step 5: Solve for x
    x = 402,304,889,358.45/724,602
  6. Step 6: Final answer
    x = 555,208.09

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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.