Home / 711,788.92-982,268.67-389,499.04

Finding the Fourth Proportional to 711,788.92, 982,268.67 and 389,499.04

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Solution

The fourth proportional to 711,788.92, 982,268.67 and 389,499.04 is: 537,508.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,788.92 : 982,268.67 = 389,499.04 : x
  2. Step 2: Convert to fraction form
    711,788.92/982,268.67 = 389,499.04/x
  3. Step 3: Cross multiply
    711,788.92x = 982,268.67 × 389,499.04
  4. Step 4: Simplify right side
    711,788.92x = 382,592,703,987.08
  5. Step 5: Solve for x
    x = 382,592,703,987.08/711,788.92
  6. Step 6: Final answer
    x = 537,508.65

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Double scale
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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.