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Finding the Fourth Proportional to 516,374.80, 774,562.20 and 383,514.55

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Solution

The fourth proportional to 516,374.80, 774,562.20 and 383,514.55 is: 575,271.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,374.80 : 774,562.20 = 383,514.55 : x
  2. Step 2: Convert to fraction form
    516,374.80/774,562.20 = 383,514.55/x
  3. Step 3: Cross multiply
    516,374.80x = 774,562.20 × 383,514.55
  4. Step 4: Simplify right side
    516,374.80x = 297,055,873,580.01
  5. Step 5: Solve for x
    x = 297,055,873,580.01/516,374.80
  6. Step 6: Final answer
    x = 575,271.83

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Double scale
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Similar ratio
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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.