Home / 739,961.61-1,021,147-400,429.86

Finding the Fourth Proportional to 739,961.61, 1,021,147 and 400,429.86

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Solution

The fourth proportional to 739,961.61, 1,021,147 and 400,429.86 is: 552,593.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,961.61 : 1,021,147 = 400,429.86 : x
  2. Step 2: Convert to fraction form
    739,961.61/1,021,147 = 400,429.86/x
  3. Step 3: Cross multiply
    739,961.61x = 1,021,147 × 400,429.86
  4. Step 4: Simplify right side
    739,961.61x = 408,897,750,249.42
  5. Step 5: Solve for x
    x = 408,897,750,249.42/739,961.61
  6. Step 6: Final answer
    x = 552,593.20

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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.