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Finding the Fourth Proportional to 487,562.63, 672,856.25 and 269,767.76

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Solution

The fourth proportional to 487,562.63, 672,856.25 and 269,767.76 is: 372,290.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,562.63 : 672,856.25 = 269,767.76 : x
  2. Step 2: Convert to fraction form
    487,562.63/672,856.25 = 269,767.76/x
  3. Step 3: Cross multiply
    487,562.63x = 672,856.25 × 269,767.76
  4. Step 4: Simplify right side
    487,562.63x = 181,514,918,651.38
  5. Step 5: Solve for x
    x = 181,514,918,651.38/487,562.63
  6. Step 6: Final answer
    x = 372,290.47

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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.