Home / 711,795.76-982,278.12-389,505.92

Finding the Fourth Proportional to 711,795.76, 982,278.12 and 389,505.92

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Solution

The fourth proportional to 711,795.76, 982,278.12 and 389,505.92 is: 537,518.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,795.76 : 982,278.12 = 389,505.92 : x
  2. Step 2: Convert to fraction form
    711,795.76/982,278.12 = 389,505.92/x
  3. Step 3: Cross multiply
    711,795.76x = 982,278.12 × 389,505.92
  4. Step 4: Simplify right side
    711,795.76x = 382,603,142,826.47
  5. Step 5: Solve for x
    x = 382,603,142,826.47/711,795.76
  6. Step 6: Final answer
    x = 537,518.15

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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.