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Finding the Fourth Proportional to 502,456.40, 754,913.40 and 378,040.40

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Solution

The fourth proportional to 502,456.40, 754,913.40 and 378,040.40 is: 567,985.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,456.40 : 754,913.40 = 378,040.40 : x
  2. Step 2: Convert to fraction form
    502,456.40/754,913.40 = 378,040.40/x
  3. Step 3: Cross multiply
    502,456.40x = 754,913.40 × 378,040.40
  4. Step 4: Simplify right side
    502,456.40x = 285,387,763,701.36
  5. Step 5: Solve for x
    x = 285,387,763,701.36/502,456.40
  6. Step 6: Final answer
    x = 567,985.13

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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.