Home / 742,543.40-1,113,815.10-636,255.20

Finding the Fourth Proportional to 742,543.40, 1,113,815.10 and 636,255.20

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Solution

The fourth proportional to 742,543.40, 1,113,815.10 and 636,255.20 is: 954,382.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,543.40 : 1,113,815.10 = 636,255.20 : x
  2. Step 2: Convert to fraction form
    742,543.40/1,113,815.10 = 636,255.20/x
  3. Step 3: Cross multiply
    742,543.40x = 1,113,815.10 × 636,255.20
  4. Step 4: Simplify right side
    742,543.40x = 708,670,649,213.52
  5. Step 5: Solve for x
    x = 708,670,649,213.52/742,543.40
  6. Step 6: Final answer
    x = 954,382.80

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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.