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Finding the Fourth Proportional to 666,755.49, 920,115.41 and 360,825.11

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Solution

The fourth proportional to 666,755.49, 920,115.41 and 360,825.11 is: 497,934.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,755.49 : 920,115.41 = 360,825.11 : x
  2. Step 2: Convert to fraction form
    666,755.49/920,115.41 = 360,825.11/x
  3. Step 3: Cross multiply
    666,755.49x = 920,115.41 × 360,825.11
  4. Step 4: Simplify right side
    666,755.49x = 332,000,737,621.24
  5. Step 5: Solve for x
    x = 332,000,737,621.24/666,755.49
  6. Step 6: Final answer
    x = 497,934.76

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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.