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Finding the Fourth Proportional to 545,231.80, 817,847.70 and 345,777.40

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Solution

The fourth proportional to 545,231.80, 817,847.70 and 345,777.40 is: 518,666.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,231.80 : 817,847.70 = 345,777.40 : x
  2. Step 2: Convert to fraction form
    545,231.80/817,847.70 = 345,777.40/x
  3. Step 3: Cross multiply
    545,231.80x = 817,847.70 × 345,777.40
  4. Step 4: Simplify right side
    545,231.80x = 282,793,251,301.98
  5. Step 5: Solve for x
    x = 282,793,251,301.98/545,231.80
  6. Step 6: Final answer
    x = 518,666.10

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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.