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Finding the Fourth Proportional to 653,235.76, 979,472.30 and 253,409.36

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Solution

The fourth proportional to 653,235.76, 979,472.30 and 253,409.36 is: 379,966.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,235.76 : 979,472.30 = 253,409.36 : x
  2. Step 2: Convert to fraction form
    653,235.76/979,472.30 = 253,409.36/x
  3. Step 3: Cross multiply
    653,235.76x = 979,472.30 × 253,409.36
  4. Step 4: Simplify right side
    653,235.76x = 248,207,448,680.73
  5. Step 5: Solve for x
    x = 248,207,448,680.73/653,235.76
  6. Step 6: Final answer
    x = 379,966.11

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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.