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Finding the Fourth Proportional to 653,465.80, 979,818.15 and 253,639.49

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Solution

The fourth proportional to 653,465.80, 979,818.15 and 253,639.49 is: 380,311.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,465.80 : 979,818.15 = 253,639.49 : x
  2. Step 2: Convert to fraction form
    653,465.80/979,818.15 = 253,639.49/x
  3. Step 3: Cross multiply
    653,465.80x = 979,818.15 × 253,639.49
  4. Step 4: Simplify right side
    653,465.80x = 248,520,573,904.33
  5. Step 5: Solve for x
    x = 248,520,573,904.33/653,465.80
  6. Step 6: Final answer
    x = 380,311.52

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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.