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Finding the Fourth Proportional to 724,179, 999,389.75 and 418,249.70

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Solution

The fourth proportional to 724,179, 999,389.75 and 418,249.70 is: 577,197.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,179 : 999,389.75 = 418,249.70 : x
  2. Step 2: Convert to fraction form
    724,179/999,389.75 = 418,249.70/x
  3. Step 3: Cross multiply
    724,179x = 999,389.75 × 418,249.70
  4. Step 4: Simplify right side
    724,179x = 417,994,456,032.38
  5. Step 5: Solve for x
    x = 417,994,456,032.38/724,179
  6. Step 6: Final answer
    x = 577,197.70

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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.