Home / 711,131.64-981,281.29-420,752.11

Finding the Fourth Proportional to 711,131.64, 981,281.29 and 420,752.11

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Solution

The fourth proportional to 711,131.64, 981,281.29 and 420,752.11 is: 580,590.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,131.64 : 981,281.29 = 420,752.11 : x
  2. Step 2: Convert to fraction form
    711,131.64/981,281.29 = 420,752.11/x
  3. Step 3: Cross multiply
    711,131.64x = 981,281.29 × 420,752.11
  4. Step 4: Simplify right side
    711,131.64x = 412,876,173,271.02
  5. Step 5: Solve for x
    x = 412,876,173,271.02/711,131.64
  6. Step 6: Final answer
    x = 580,590.36

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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.