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Finding the Fourth Proportional to 605,612.80, 907,435.05 and 520,975.90

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Solution

The fourth proportional to 605,612.80, 907,435.05 and 520,975.90 is: 780,617.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,612.80 : 907,435.05 = 520,975.90 : x
  2. Step 2: Convert to fraction form
    605,612.80/907,435.05 = 520,975.90/x
  3. Step 3: Cross multiply
    605,612.80x = 907,435.05 × 520,975.90
  4. Step 4: Simplify right side
    605,612.80x = 472,751,791,865.30
  5. Step 5: Solve for x
    x = 472,751,791,865.30/605,612.80
  6. Step 6: Final answer
    x = 780,617.24

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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.