Home / 711,726.12-982,194.30-389,464.38

Finding the Fourth Proportional to 711,726.12, 982,194.30 and 389,464.38

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Solution

The fourth proportional to 711,726.12, 982,194.30 and 389,464.38 is: 537,467.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,726.12 : 982,194.30 = 389,464.38 : x
  2. Step 2: Convert to fraction form
    711,726.12/982,194.30 = 389,464.38/x
  3. Step 3: Cross multiply
    711,726.12x = 982,194.30 × 389,464.38
  4. Step 4: Simplify right side
    711,726.12x = 382,529,694,089.03
  5. Step 5: Solve for x
    x = 382,529,694,089.03/711,726.12
  6. Step 6: Final answer
    x = 537,467.55

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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.