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Finding the Fourth Proportional to 526,385.16, 726,367.32 and 311,487.84

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Solution

The fourth proportional to 526,385.16, 726,367.32 and 311,487.84 is: 429,827.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,385.16 : 726,367.32 = 311,487.84 : x
  2. Step 2: Convert to fraction form
    526,385.16/726,367.32 = 311,487.84/x
  3. Step 3: Cross multiply
    526,385.16x = 726,367.32 × 311,487.84
  4. Step 4: Simplify right side
    526,385.16x = 226,254,587,553.39
  5. Step 5: Solve for x
    x = 226,254,587,553.39/526,385.16
  6. Step 6: Final answer
    x = 429,827.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.