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Finding the Fourth Proportional to 644,094.08, 887,387.72 and 498,398.94

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Solution

The fourth proportional to 644,094.08, 887,387.72 and 498,398.94 is: 686,659.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,094.08 : 887,387.72 = 498,398.94 : x
  2. Step 2: Convert to fraction form
    644,094.08/887,387.72 = 498,398.94/x
  3. Step 3: Cross multiply
    644,094.08x = 887,387.72 × 498,398.94
  4. Step 4: Simplify right side
    644,094.08x = 442,273,099,017.02
  5. Step 5: Solve for x
    x = 442,273,099,017.02/644,094.08
  6. Step 6: Final answer
    x = 686,659.16

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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.