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Finding the Fourth Proportional to 653,127.10, 980,063.75 and 253,715.90

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Solution

The fourth proportional to 653,127.10, 980,063.75 and 253,715.90 is: 380,718.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,127.10 : 980,063.75 = 253,715.90 : x
  2. Step 2: Convert to fraction form
    653,127.10/980,063.75 = 253,715.90/x
  3. Step 3: Cross multiply
    653,127.10x = 980,063.75 × 253,715.90
  4. Step 4: Simplify right side
    653,127.10x = 248,657,752,122.60
  5. Step 5: Solve for x
    x = 248,657,752,122.60/653,127.10
  6. Step 6: Final answer
    x = 380,718.78

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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.