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Finding the Fourth Proportional to 873,323.52, 1,205,174.10 and 491,349.38

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Solution

The fourth proportional to 873,323.52, 1,205,174.10 and 491,349.38 is: 678,055.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,323.52 : 1,205,174.10 = 491,349.38 : x
  2. Step 2: Convert to fraction form
    873,323.52/1,205,174.10 = 491,349.38/x
  3. Step 3: Cross multiply
    873,323.52x = 1,205,174.10 × 491,349.38
  4. Step 4: Simplify right side
    873,323.52x = 592,161,546,827.06
  5. Step 5: Solve for x
    x = 592,161,546,827.06/873,323.52
  6. Step 6: Final answer
    x = 678,055.19

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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.