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Finding the Fourth Proportional to 610,437.20, 916,530.60 and 461,721.20

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Solution

The fourth proportional to 610,437.20, 916,530.60 and 461,721.20 is: 693,243.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,437.20 : 916,530.60 = 461,721.20 : x
  2. Step 2: Convert to fraction form
    610,437.20/916,530.60 = 461,721.20/x
  3. Step 3: Cross multiply
    610,437.20x = 916,530.60 × 461,721.20
  4. Step 4: Simplify right side
    610,437.20x = 423,181,608,468.72
  5. Step 5: Solve for x
    x = 423,181,608,468.72/610,437.20
  6. Step 6: Final answer
    x = 693,243.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.