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Finding the Fourth Proportional to 667,119, 920,767.14 and 425,345.88

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Solution

The fourth proportional to 667,119, 920,767.14 and 425,345.88 is: 587,068.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,119 : 920,767.14 = 425,345.88 : x
  2. Step 2: Convert to fraction form
    667,119/920,767.14 = 425,345.88/x
  3. Step 3: Cross multiply
    667,119x = 920,767.14 × 425,345.88
  4. Step 4: Simplify right side
    667,119x = 391,644,509,438.38
  5. Step 5: Solve for x
    x = 391,644,509,438.38/667,119
  6. Step 6: Final answer
    x = 587,068.44

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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.