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Finding the Fourth Proportional to 663,249.62, 915,309.06 and 376,818.32

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Solution

The fourth proportional to 663,249.62, 915,309.06 and 376,818.32 is: 520,023.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,249.62 : 915,309.06 = 376,818.32 : x
  2. Step 2: Convert to fraction form
    663,249.62/915,309.06 = 376,818.32/x
  3. Step 3: Cross multiply
    663,249.62x = 915,309.06 × 376,818.32
  4. Step 4: Simplify right side
    663,249.62x = 344,905,222,269.98
  5. Step 5: Solve for x
    x = 344,905,222,269.98/663,249.62
  6. Step 6: Final answer
    x = 520,023.25

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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.