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Finding the Fourth Proportional to 485,101.65, 664,591.64 and 466,920.16

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Solution

The fourth proportional to 485,101.65, 664,591.64 and 466,920.16 is: 639,682.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,101.65 : 664,591.64 = 466,920.16 : x
  2. Step 2: Convert to fraction form
    485,101.65/664,591.64 = 466,920.16/x
  3. Step 3: Cross multiply
    485,101.65x = 664,591.64 × 466,920.16
  4. Step 4: Simplify right side
    485,101.65x = 310,311,234,883.46
  5. Step 5: Solve for x
    x = 310,311,234,883.46/485,101.65
  6. Step 6: Final answer
    x = 639,682.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.