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Finding the Fourth Proportional to 666,861.59, 920,171.04 and 372,475.04

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Solution

The fourth proportional to 666,861.59, 920,171.04 and 372,475.04 is: 513,960.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,861.59 : 920,171.04 = 372,475.04 : x
  2. Step 2: Convert to fraction form
    666,861.59/920,171.04 = 372,475.04/x
  3. Step 3: Cross multiply
    666,861.59x = 920,171.04 × 372,475.04
  4. Step 4: Simplify right side
    666,861.59x = 342,740,743,315.03
  5. Step 5: Solve for x
    x = 342,740,743,315.03/666,861.59
  6. Step 6: Final answer
    x = 513,960.84

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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.