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Finding the Fourth Proportional to 666,305.10, 919,508.46 and 360,387.54

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Solution

The fourth proportional to 666,305.10, 919,508.46 and 360,387.54 is: 497,338.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,305.10 : 919,508.46 = 360,387.54 : x
  2. Step 2: Convert to fraction form
    666,305.10/919,508.46 = 360,387.54/x
  3. Step 3: Cross multiply
    666,305.10x = 919,508.46 × 360,387.54
  4. Step 4: Simplify right side
    666,305.10x = 331,379,391,908.59
  5. Step 5: Solve for x
    x = 331,379,391,908.59/666,305.10
  6. Step 6: Final answer
    x = 497,338.82

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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.