Home / 1,069,387.20-1,604,080.80-321,433.20

Finding the Fourth Proportional to 1,069,387.20, 1,604,080.80 and 321,433.20

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Solution

The fourth proportional to 1,069,387.20, 1,604,080.80 and 321,433.20 is: 482,149.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,069,387.20 : 1,604,080.80 = 321,433.20 : x
  2. Step 2: Convert to fraction form
    1,069,387.20/1,604,080.80 = 321,433.20/x
  3. Step 3: Cross multiply
    1,069,387.20x = 1,604,080.80 × 321,433.20
  4. Step 4: Simplify right side
    1,069,387.20x = 515,604,824,602.56
  5. Step 5: Solve for x
    x = 515,604,824,602.56/1,069,387.20
  6. Step 6: Final answer
    x = 482,149.80

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Double scale
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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.