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Finding the Fourth Proportional to 587,041.20, 880,561.80 and 487,400.40

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Solution

The fourth proportional to 587,041.20, 880,561.80 and 487,400.40 is: 731,100.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,041.20 : 880,561.80 = 487,400.40 : x
  2. Step 2: Convert to fraction form
    587,041.20/880,561.80 = 487,400.40/x
  3. Step 3: Cross multiply
    587,041.20x = 880,561.80 × 487,400.40
  4. Step 4: Simplify right side
    587,041.20x = 429,186,173,544.72
  5. Step 5: Solve for x
    x = 429,186,173,544.72/587,041.20
  6. Step 6: Final answer
    x = 731,100.60

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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.