Home / 711,715.59-982,179.81-389,453.85

Finding the Fourth Proportional to 711,715.59, 982,179.81 and 389,453.85

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Solution

The fourth proportional to 711,715.59, 982,179.81 and 389,453.85 is: 537,453.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,715.59 : 982,179.81 = 389,453.85 : x
  2. Step 2: Convert to fraction form
    711,715.59/982,179.81 = 389,453.85/x
  3. Step 3: Cross multiply
    711,715.59x = 982,179.81 × 389,453.85
  4. Step 4: Simplify right side
    711,715.59x = 382,513,708,396.77
  5. Step 5: Solve for x
    x = 382,513,708,396.77/711,715.59
  6. Step 6: Final answer
    x = 537,453.04

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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.