Home / 711,640.60-1,068,065.70-291,218.20

Finding the Fourth Proportional to 711,640.60, 1,068,065.70 and 291,218.20

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Solution

The fourth proportional to 711,640.60, 1,068,065.70 and 291,218.20 is: 437,074.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,640.60 : 1,068,065.70 = 291,218.20 : x
  2. Step 2: Convert to fraction form
    711,640.60/1,068,065.70 = 291,218.20/x
  3. Step 3: Cross multiply
    711,640.60x = 1,068,065.70 × 291,218.20
  4. Step 4: Simplify right side
    711,640.60x = 311,040,170,635.74
  5. Step 5: Solve for x
    x = 311,040,170,635.74/711,640.60
  6. Step 6: Final answer
    x = 437,074.80

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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.