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Finding the Fourth Proportional to 667,089.64, 920,566.68 and 372,741.76

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Solution

The fourth proportional to 667,089.64, 920,566.68 and 372,741.76 is: 514,374.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,089.64 : 920,566.68 = 372,741.76 : x
  2. Step 2: Convert to fraction form
    667,089.64/920,566.68 = 372,741.76/x
  3. Step 3: Cross multiply
    667,089.64x = 920,566.68 × 372,741.76
  4. Step 4: Simplify right side
    667,089.64x = 343,133,644,500.56
  5. Step 5: Solve for x
    x = 343,133,644,500.56/667,089.64
  6. Step 6: Final answer
    x = 514,374.12

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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.