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Finding the Fourth Proportional to 502,646.48, 753,969.24 and 128,668.88

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Solution

The fourth proportional to 502,646.48, 753,969.24 and 128,668.88 is: 193,003.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,646.48 : 753,969.24 = 128,668.88 : x
  2. Step 2: Convert to fraction form
    502,646.48/753,969.24 = 128,668.88/x
  3. Step 3: Cross multiply
    502,646.48x = 753,969.24 × 128,668.88
  4. Step 4: Simplify right side
    502,646.48x = 97,012,377,665.25
  5. Step 5: Solve for x
    x = 97,012,377,665.25/502,646.48
  6. Step 6: Final answer
    x = 193,003.20

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1.5x scale

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.