Home / 742,129.80-1,113,194.70-243,493.80

Finding the Fourth Proportional to 742,129.80, 1,113,194.70 and 243,493.80

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Solution

The fourth proportional to 742,129.80, 1,113,194.70 and 243,493.80 is: 365,240.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,129.80 : 1,113,194.70 = 243,493.80 : x
  2. Step 2: Convert to fraction form
    742,129.80/1,113,194.70 = 243,493.80/x
  3. Step 3: Cross multiply
    742,129.80x = 1,113,194.70 × 243,493.80
  4. Step 4: Simplify right side
    742,129.80x = 271,056,007,642.86
  5. Step 5: Solve for x
    x = 271,056,007,642.86/742,129.80
  6. Step 6: Final answer
    x = 365,240.70

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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.