Home / 738,749.74-1,108,179.28-265,439.20

Finding the Fourth Proportional to 738,749.74, 1,108,179.28 and 265,439.20

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Solution

The fourth proportional to 738,749.74, 1,108,179.28 and 265,439.20 is: 398,178.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,749.74 : 1,108,179.28 = 265,439.20 : x
  2. Step 2: Convert to fraction form
    738,749.74/1,108,179.28 = 265,439.20/x
  3. Step 3: Cross multiply
    738,749.74x = 1,108,179.28 × 265,439.20
  4. Step 4: Simplify right side
    738,749.74x = 294,154,221,539.78
  5. Step 5: Solve for x
    x = 294,154,221,539.78/738,749.74
  6. Step 6: Final answer
    x = 398,178.44

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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.