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Finding the Fourth Proportional to 487,546.82, 672,849 and 272,706.87

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Solution

The fourth proportional to 487,546.82, 672,849 and 272,706.87 is: 376,354.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,546.82 : 672,849 = 272,706.87 : x
  2. Step 2: Convert to fraction form
    487,546.82/672,849 = 272,706.87/x
  3. Step 3: Cross multiply
    487,546.82x = 672,849 × 272,706.87
  4. Step 4: Simplify right side
    487,546.82x = 183,490,544,772.63
  5. Step 5: Solve for x
    x = 183,490,544,772.63/487,546.82
  6. Step 6: Final answer
    x = 376,354.72

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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.