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Finding the Fourth Proportional to 659,803.70, 910,539.69 and 357,997.70

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Solution

The fourth proportional to 659,803.70, 910,539.69 and 357,997.70 is: 494,042.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,803.70 : 910,539.69 = 357,997.70 : x
  2. Step 2: Convert to fraction form
    659,803.70/910,539.69 = 357,997.70/x
  3. Step 3: Cross multiply
    659,803.70x = 910,539.69 × 357,997.70
  4. Step 4: Simplify right side
    659,803.70x = 325,971,114,778.71
  5. Step 5: Solve for x
    x = 325,971,114,778.71/659,803.70
  6. Step 6: Final answer
    x = 494,042.57

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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.