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Finding the Fourth Proportional to 707,671.28, 976,576.72 and 401,745.12

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Solution

The fourth proportional to 707,671.28, 976,576.72 and 401,745.12 is: 554,402.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,671.28 : 976,576.72 = 401,745.12 : x
  2. Step 2: Convert to fraction form
    707,671.28/976,576.72 = 401,745.12/x
  3. Step 3: Cross multiply
    707,671.28x = 976,576.72 × 401,745.12
  4. Step 4: Simplify right side
    707,671.28x = 392,334,931,565.61
  5. Step 5: Solve for x
    x = 392,334,931,565.61/707,671.28
  6. Step 6: Final answer
    x = 554,402.79

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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.