Home / 665,718.12-998,161.13-281,269.35

Finding the Fourth Proportional to 665,718.12, 998,161.13 and 281,269.35

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Solution

The fourth proportional to 665,718.12, 998,161.13 and 281,269.35 is: 421,728.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,718.12 : 998,161.13 = 281,269.35 : x
  2. Step 2: Convert to fraction form
    665,718.12/998,161.13 = 281,269.35/x
  3. Step 3: Cross multiply
    665,718.12x = 998,161.13 × 281,269.35
  4. Step 4: Simplify right side
    665,718.12x = 280,752,130,824.02
  5. Step 5: Solve for x
    x = 280,752,130,824.02/665,718.12
  6. Step 6: Final answer
    x = 421,728.24

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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.