Home / 981,378.84-1,472,066.40-307,511.76

Finding the Fourth Proportional to 981,378.84, 1,472,066.40 and 307,511.76

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Solution

The fourth proportional to 981,378.84, 1,472,066.40 and 307,511.76 is: 461,267.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,378.84 : 1,472,066.40 = 307,511.76 : x
  2. Step 2: Convert to fraction form
    981,378.84/1,472,066.40 = 307,511.76/x
  3. Step 3: Cross multiply
    981,378.84x = 1,472,066.40 × 307,511.76
  4. Step 4: Simplify right side
    981,378.84x = 452,677,729,500.86
  5. Step 5: Solve for x
    x = 452,677,729,500.86/981,378.84
  6. Step 6: Final answer
    x = 461,267.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.