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Finding the Fourth Proportional to 981,603.20, 1,472,113.20 and 382,219.40

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Solution

The fourth proportional to 981,603.20, 1,472,113.20 and 382,219.40 is: 573,215.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,603.20 : 1,472,113.20 = 382,219.40 : x
  2. Step 2: Convert to fraction form
    981,603.20/1,472,113.20 = 382,219.40/x
  3. Step 3: Cross multiply
    981,603.20x = 1,472,113.20 × 382,219.40
  4. Step 4: Simplify right side
    981,603.20x = 562,670,224,036.08
  5. Step 5: Solve for x
    x = 562,670,224,036.08/981,603.20
  6. Step 6: Final answer
    x = 573,215.56

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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.