Home / 711,071.20-981,378.48-435,593.44

Finding the Fourth Proportional to 711,071.20, 981,378.48 and 435,593.44

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Solution

The fourth proportional to 711,071.20, 981,378.48 and 435,593.44 is: 601,180.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,071.20 : 981,378.48 = 435,593.44 : x
  2. Step 2: Convert to fraction form
    711,071.20/981,378.48 = 435,593.44/x
  3. Step 3: Cross multiply
    711,071.20x = 981,378.48 × 435,593.44
  4. Step 4: Simplify right side
    711,071.20x = 427,482,028,045.17
  5. Step 5: Solve for x
    x = 427,482,028,045.17/711,071.20
  6. Step 6: Final answer
    x = 601,180.34

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Half scale
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Double scale
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Similar ratio
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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.