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Finding the Fourth Proportional to 665,035.20, 998,179.20 and 349,718.40

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Solution

The fourth proportional to 665,035.20, 998,179.20 and 349,718.40 is: 524,907.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,035.20 : 998,179.20 = 349,718.40 : x
  2. Step 2: Convert to fraction form
    665,035.20/998,179.20 = 349,718.40/x
  3. Step 3: Cross multiply
    665,035.20x = 998,179.20 × 349,718.40
  4. Step 4: Simplify right side
    665,035.20x = 349,081,632,737.28
  5. Step 5: Solve for x
    x = 349,081,632,737.28/665,035.20
  6. Step 6: Final answer
    x = 524,907.00

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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.