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Finding the Fourth Proportional to 667,371.96, 920,235.33 and 425,271.06

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Solution

The fourth proportional to 667,371.96, 920,235.33 and 425,271.06 is: 586,403.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,371.96 : 920,235.33 = 425,271.06 : x
  2. Step 2: Convert to fraction form
    667,371.96/920,235.33 = 425,271.06/x
  3. Step 3: Cross multiply
    667,371.96x = 920,235.33 × 425,271.06
  4. Step 4: Simplify right side
    667,371.96x = 391,349,454,238.55
  5. Step 5: Solve for x
    x = 391,349,454,238.55/667,371.96
  6. Step 6: Final answer
    x = 586,403.80

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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.