Home / 742,053.20-1,113,598.20-321,630.80

Finding the Fourth Proportional to 742,053.20, 1,113,598.20 and 321,630.80

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Solution

The fourth proportional to 742,053.20, 1,113,598.20 and 321,630.80 is: 482,670.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,053.20 : 1,113,598.20 = 321,630.80 : x
  2. Step 2: Convert to fraction form
    742,053.20/1,113,598.20 = 321,630.80/x
  3. Step 3: Cross multiply
    742,053.20x = 1,113,598.20 × 321,630.80
  4. Step 4: Simplify right side
    742,053.20x = 358,167,479,944.56
  5. Step 5: Solve for x
    x = 358,167,479,944.56/742,053.20
  6. Step 6: Final answer
    x = 482,670.89

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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.