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Finding the Fourth Proportional to 672,797.16, 928,168.74 and 386,251.56

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Solution

The fourth proportional to 672,797.16, 928,168.74 and 386,251.56 is: 532,859.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,797.16 : 928,168.74 = 386,251.56 : x
  2. Step 2: Convert to fraction form
    672,797.16/928,168.74 = 386,251.56/x
  3. Step 3: Cross multiply
    672,797.16x = 928,168.74 × 386,251.56
  4. Step 4: Simplify right side
    672,797.16x = 358,506,623,768.23
  5. Step 5: Solve for x
    x = 358,506,623,768.23/672,797.16
  6. Step 6: Final answer
    x = 532,859.89

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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.