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Finding the Fourth Proportional to 605,069.80, 907,604.70 and 437,108.20

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Solution

The fourth proportional to 605,069.80, 907,604.70 and 437,108.20 is: 655,662.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,069.80 : 907,604.70 = 437,108.20 : x
  2. Step 2: Convert to fraction form
    605,069.80/907,604.70 = 437,108.20/x
  3. Step 3: Cross multiply
    605,069.80x = 907,604.70 × 437,108.20
  4. Step 4: Simplify right side
    605,069.80x = 396,721,456,728.54
  5. Step 5: Solve for x
    x = 396,721,456,728.54/605,069.80
  6. Step 6: Final answer
    x = 655,662.30

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Double scale
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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.