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Finding the Fourth Proportional to 659,803.20, 910,539 and 357,997.20

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Solution

The fourth proportional to 659,803.20, 910,539 and 357,997.20 is: 494,041.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,803.20 : 910,539 = 357,997.20 : x
  2. Step 2: Convert to fraction form
    659,803.20/910,539 = 357,997.20/x
  3. Step 3: Cross multiply
    659,803.20x = 910,539 × 357,997.20
  4. Step 4: Simplify right side
    659,803.20x = 325,970,412,490.80
  5. Step 5: Solve for x
    x = 325,970,412,490.80/659,803.20
  6. Step 6: Final answer
    x = 494,041.88

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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.