Home / 865,301,728.95-1,297,954,217.28-210,253,309.65

Finding the Fourth Proportional to 865,301,728.95, 1,297,954,217.28 and 210,253,309.65

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Solution

The fourth proportional to 865,301,728.95, 1,297,954,217.28 and 210,253,309.65 is: 315,380,359.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,301,728.95 : 1,297,954,217.28 = 210,253,309.65 : x
  2. Step 2: Convert to fraction form
    865,301,728.95/1,297,954,217.28 = 210,253,309.65/x
  3. Step 3: Cross multiply
    865,301,728.95x = 1,297,954,217.28 × 210,253,309.65
  4. Step 4: Simplify right side
    865,301,728.95x = 272,899,169,957,295,232
  5. Step 5: Solve for x
    x = 272,899,169,957,295,232/865,301,728.95
  6. Step 6: Final answer
    x = 315,380,359.04

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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.