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Finding the Fourth Proportional to 656,853.90, 985,280.85 and 550,565.70

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Solution

The fourth proportional to 656,853.90, 985,280.85 and 550,565.70 is: 825,848.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,853.90 : 985,280.85 = 550,565.70 : x
  2. Step 2: Convert to fraction form
    656,853.90/985,280.85 = 550,565.70/x
  3. Step 3: Cross multiply
    656,853.90x = 985,280.85 × 550,565.70
  4. Step 4: Simplify right side
    656,853.90x = 542,461,840,876.85
  5. Step 5: Solve for x
    x = 542,461,840,876.85/656,853.90
  6. Step 6: Final answer
    x = 825,848.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.