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Finding the Fourth Proportional to 545,421.60, 818,132.40 and 356,464.80

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Solution

The fourth proportional to 545,421.60, 818,132.40 and 356,464.80 is: 534,697.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,421.60 : 818,132.40 = 356,464.80 : x
  2. Step 2: Convert to fraction form
    545,421.60/818,132.40 = 356,464.80/x
  3. Step 3: Cross multiply
    545,421.60x = 818,132.40 × 356,464.80
  4. Step 4: Simplify right side
    545,421.60x = 291,635,402,339.52
  5. Step 5: Solve for x
    x = 291,635,402,339.52/545,421.60
  6. Step 6: Final answer
    x = 534,697.20

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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.