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Finding the Fourth Proportional to 487,647, 672,966.36 and 272,824.20

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Solution

The fourth proportional to 487,647, 672,966.36 and 272,824.20 is: 376,504.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,647 : 672,966.36 = 272,824.20 : x
  2. Step 2: Convert to fraction form
    487,647/672,966.36 = 272,824.20/x
  3. Step 3: Cross multiply
    487,647x = 672,966.36 × 272,824.20
  4. Step 4: Simplify right side
    487,647x = 183,601,508,793.91
  5. Step 5: Solve for x
    x = 183,601,508,793.91/487,647
  6. Step 6: Final answer
    x = 376,504.95

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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.