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Finding the Fourth Proportional to 487,545.78, 672,938.37 and 296,693.58

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Solution

The fourth proportional to 487,545.78, 672,938.37 and 296,693.58 is: 409,513.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,545.78 : 672,938.37 = 296,693.58 : x
  2. Step 2: Convert to fraction form
    487,545.78/672,938.37 = 296,693.58/x
  3. Step 3: Cross multiply
    487,545.78x = 672,938.37 × 296,693.58
  4. Step 4: Simplify right side
    487,545.78x = 199,656,494,114.67
  5. Step 5: Solve for x
    x = 199,656,494,114.67/487,545.78
  6. Step 6: Final answer
    x = 409,513.33

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1.5x scale

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.