Home / 711,743.52-982,206.05-389,453.61

Finding the Fourth Proportional to 711,743.52, 982,206.05 and 389,453.61

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Solution

The fourth proportional to 711,743.52, 982,206.05 and 389,453.61 is: 537,445.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,743.52 : 982,206.05 = 389,453.61 : x
  2. Step 2: Convert to fraction form
    711,743.52/982,206.05 = 389,453.61/x
  3. Step 3: Cross multiply
    711,743.52x = 982,206.05 × 389,453.61
  4. Step 4: Simplify right side
    711,743.52x = 382,523,689,989.07
  5. Step 5: Solve for x
    x = 382,523,689,989.07/711,743.52
  6. Step 6: Final answer
    x = 537,445.98

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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.