Home / 653,948.20-981,548.70-338,631.40

Finding the Fourth Proportional to 653,948.20, 981,548.70 and 338,631.40

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Solution

The fourth proportional to 653,948.20, 981,548.70 and 338,631.40 is: 508,271.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,948.20 : 981,548.70 = 338,631.40 : x
  2. Step 2: Convert to fraction form
    653,948.20/981,548.70 = 338,631.40/x
  3. Step 3: Cross multiply
    653,948.20x = 981,548.70 × 338,631.40
  4. Step 4: Simplify right side
    653,948.20x = 332,383,210,449.18
  5. Step 5: Solve for x
    x = 332,383,210,449.18/653,948.20
  6. Step 6: Final answer
    x = 508,271.47

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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.