Home / 711,396.08-981,758.04-409,687.28

Finding the Fourth Proportional to 711,396.08, 981,758.04 and 409,687.28

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Solution

The fourth proportional to 711,396.08, 981,758.04 and 409,687.28 is: 565,386.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,396.08 : 981,758.04 = 409,687.28 : x
  2. Step 2: Convert to fraction form
    711,396.08/981,758.04 = 409,687.28/x
  3. Step 3: Cross multiply
    711,396.08x = 981,758.04 × 409,687.28
  4. Step 4: Simplify right side
    711,396.08x = 402,213,781,025.73
  5. Step 5: Solve for x
    x = 402,213,781,025.73/711,396.08
  6. Step 6: Final answer
    x = 565,386.56

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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.