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Finding the Fourth Proportional to 485,081.95, 664,565.47 and 466,900.54

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Solution

The fourth proportional to 485,081.95, 664,565.47 and 466,900.54 is: 639,656.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,081.95 : 664,565.47 = 466,900.54 : x
  2. Step 2: Convert to fraction form
    485,081.95/664,565.47 = 466,900.54/x
  3. Step 3: Cross multiply
    485,081.95x = 664,565.47 × 466,900.54
  4. Step 4: Simplify right side
    485,081.95x = 310,285,976,808.35
  5. Step 5: Solve for x
    x = 310,285,976,808.35/485,081.95
  6. Step 6: Final answer
    x = 639,656.82

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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.