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Finding the Fourth Proportional to 605,633.10, 908,449.65 and 578,076.90

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Solution

The fourth proportional to 605,633.10, 908,449.65 and 578,076.90 is: 867,115.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,633.10 : 908,449.65 = 578,076.90 : x
  2. Step 2: Convert to fraction form
    605,633.10/908,449.65 = 578,076.90/x
  3. Step 3: Cross multiply
    605,633.10x = 908,449.65 × 578,076.90
  4. Step 4: Simplify right side
    605,633.10x = 525,153,757,478.09
  5. Step 5: Solve for x
    x = 525,153,757,478.09/605,633.10
  6. Step 6: Final answer
    x = 867,115.35

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.