Home / 742,424.53-1,024,546.51-402,892.78

Finding the Fourth Proportional to 742,424.53, 1,024,546.51 and 402,892.78

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Solution

The fourth proportional to 742,424.53, 1,024,546.51 and 402,892.78 is: 555,992.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,424.53 : 1,024,546.51 = 402,892.78 : x
  2. Step 2: Convert to fraction form
    742,424.53/1,024,546.51 = 402,892.78/x
  3. Step 3: Cross multiply
    742,424.53x = 1,024,546.51 × 402,892.78
  4. Step 4: Simplify right side
    742,424.53x = 412,782,391,653.20
  5. Step 5: Solve for x
    x = 412,782,391,653.20/742,424.53
  6. Step 6: Final answer
    x = 555,992.39

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.