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Finding the Fourth Proportional to 653,129.10, 980,066.75 and 253,717.90

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Solution

The fourth proportional to 653,129.10, 980,066.75 and 253,717.90 is: 380,721.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,129.10 : 980,066.75 = 253,717.90 : x
  2. Step 2: Convert to fraction form
    653,129.10/980,066.75 = 253,717.90/x
  3. Step 3: Cross multiply
    653,129.10x = 980,066.75 × 253,717.90
  4. Step 4: Simplify right side
    653,129.10x = 248,660,477,669.83
  5. Step 5: Solve for x
    x = 248,660,477,669.83/653,129.10
  6. Step 6: Final answer
    x = 380,721.79

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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.