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Finding the Fourth Proportional to 391,505.60, 587,695.80 and 365,808.35

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Solution

The fourth proportional to 391,505.60, 587,695.80 and 365,808.35 is: 549,121.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,505.60 : 587,695.80 = 365,808.35 : x
  2. Step 2: Convert to fraction form
    391,505.60/587,695.80 = 365,808.35/x
  3. Step 3: Cross multiply
    391,505.60x = 587,695.80 × 365,808.35
  4. Step 4: Simplify right side
    391,505.60x = 214,984,030,899.93
  5. Step 5: Solve for x
    x = 214,984,030,899.93/391,505.60
  6. Step 6: Final answer
    x = 549,121.22

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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.