Home / 747,201.78-1,121,016.78-368,235.72

Finding the Fourth Proportional to 747,201.78, 1,121,016.78 and 368,235.72

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Solution

The fourth proportional to 747,201.78, 1,121,016.78 and 368,235.72 is: 552,459.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,201.78 : 1,121,016.78 = 368,235.72 : x
  2. Step 2: Convert to fraction form
    747,201.78/1,121,016.78 = 368,235.72/x
  3. Step 3: Cross multiply
    747,201.78x = 1,121,016.78 × 368,235.72
  4. Step 4: Simplify right side
    747,201.78x = 412,798,421,115.38
  5. Step 5: Solve for x
    x = 412,798,421,115.38/747,201.78
  6. Step 6: Final answer
    x = 552,459.10

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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.