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Finding the Fourth Proportional to 665,061.20, 998,218.20 and 349,744.40

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Solution

The fourth proportional to 665,061.20, 998,218.20 and 349,744.40 is: 524,946.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,061.20 : 998,218.20 = 349,744.40 : x
  2. Step 2: Convert to fraction form
    665,061.20/998,218.20 = 349,744.40/x
  3. Step 3: Cross multiply
    665,061.20x = 998,218.20 × 349,744.40
  4. Step 4: Simplify right side
    665,061.20x = 349,121,225,428.08
  5. Step 5: Solve for x
    x = 349,121,225,428.08/665,061.20
  6. Step 6: Final answer
    x = 524,946.01

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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.