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Finding the Fourth Proportional to 723,989.90, 999,251.44 and 418,116.08

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Solution

The fourth proportional to 723,989.90, 999,251.44 and 418,116.08 is: 577,084.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,989.90 : 999,251.44 = 418,116.08 : x
  2. Step 2: Convert to fraction form
    723,989.90/999,251.44 = 418,116.08/x
  3. Step 3: Cross multiply
    723,989.90x = 999,251.44 × 418,116.08
  4. Step 4: Simplify right side
    723,989.90x = 417,803,095,027.16
  5. Step 5: Solve for x
    x = 417,803,095,027.16/723,989.90
  6. Step 6: Final answer
    x = 577,084.15

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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.