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Finding the Fourth Proportional to 599,387.20, 899,080.80 and 410,430.40

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Solution

The fourth proportional to 599,387.20, 899,080.80 and 410,430.40 is: 615,645.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    599,387.20 : 899,080.80 = 410,430.40 : x
  2. Step 2: Convert to fraction form
    599,387.20/899,080.80 = 410,430.40/x
  3. Step 3: Cross multiply
    599,387.20x = 899,080.80 × 410,430.40
  4. Step 4: Simplify right side
    599,387.20x = 369,010,092,376.32
  5. Step 5: Solve for x
    x = 369,010,092,376.32/599,387.20
  6. Step 6: Final answer
    x = 615,645.60

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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.