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Finding the Fourth Proportional to 653,205.60, 979,870 and 253,876.96

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Solution

The fourth proportional to 653,205.60, 979,870 and 253,876.96 is: 380,839.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,205.60 : 979,870 = 253,876.96 : x
  2. Step 2: Convert to fraction form
    653,205.60/979,870 = 253,876.96/x
  3. Step 3: Cross multiply
    653,205.60x = 979,870 × 253,876.96
  4. Step 4: Simplify right side
    653,205.60x = 248,766,416,795.20
  5. Step 5: Solve for x
    x = 248,766,416,795.20/653,205.60
  6. Step 6: Final answer
    x = 380,839.38

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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.