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Finding the Fourth Proportional to 644,089.08, 887,380.83 and 498,393.93

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Solution

The fourth proportional to 644,089.08, 887,380.83 and 498,393.93 is: 686,652.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,089.08 : 887,380.83 = 498,393.93 : x
  2. Step 2: Convert to fraction form
    644,089.08/887,380.83 = 498,393.93/x
  3. Step 3: Cross multiply
    644,089.08x = 887,380.83 × 498,393.93
  4. Step 4: Simplify right side
    644,089.08x = 442,265,219,270.36
  5. Step 5: Solve for x
    x = 442,265,219,270.36/644,089.08
  6. Step 6: Final answer
    x = 686,652.26

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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.