Home / 688,761.40-950,508.30-378,660.19

Finding the Fourth Proportional to 688,761.40, 950,508.30 and 378,660.19

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Solution

The fourth proportional to 688,761.40, 950,508.30 and 378,660.19 is: 522,560.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,761.40 : 950,508.30 = 378,660.19 : x
  2. Step 2: Convert to fraction form
    688,761.40/950,508.30 = 378,660.19/x
  3. Step 3: Cross multiply
    688,761.40x = 950,508.30 × 378,660.19
  4. Step 4: Simplify right side
    688,761.40x = 359,919,653,474.58
  5. Step 5: Solve for x
    x = 359,919,653,474.58/688,761.40
  6. Step 6: Final answer
    x = 522,560.72

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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.