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Finding the Fourth Proportional to 667,694.90, 920,910.56 and 574,718.89

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Solution

The fourth proportional to 667,694.90, 920,910.56 and 574,718.89 is: 792,674.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,694.90 : 920,910.56 = 574,718.89 : x
  2. Step 2: Convert to fraction form
    667,694.90/920,910.56 = 574,718.89/x
  3. Step 3: Cross multiply
    667,694.90x = 920,910.56 × 574,718.89
  4. Step 4: Simplify right side
    667,694.90x = 529,264,695,697.96
  5. Step 5: Solve for x
    x = 529,264,695,697.96/667,694.90
  6. Step 6: Final answer
    x = 792,674.47

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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.