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Finding the Fourth Proportional to 528,987.40, 793,481.10 and 502,743.40

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Solution

The fourth proportional to 528,987.40, 793,481.10 and 502,743.40 is: 754,115.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,987.40 : 793,481.10 = 502,743.40 : x
  2. Step 2: Convert to fraction form
    528,987.40/793,481.10 = 502,743.40/x
  3. Step 3: Cross multiply
    528,987.40x = 793,481.10 × 502,743.40
  4. Step 4: Simplify right side
    528,987.40x = 398,917,386,049.74
  5. Step 5: Solve for x
    x = 398,917,386,049.74/528,987.40
  6. Step 6: Final answer
    x = 754,115.10

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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.