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Finding the Fourth Proportional to 527,339.84, 727,729.44 and 288,875.84

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Solution

The fourth proportional to 527,339.84, 727,729.44 and 288,875.84 is: 398,648.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,339.84 : 727,729.44 = 288,875.84 : x
  2. Step 2: Convert to fraction form
    527,339.84/727,729.44 = 288,875.84/x
  3. Step 3: Cross multiply
    527,339.84x = 727,729.44 × 288,875.84
  4. Step 4: Simplify right side
    527,339.84x = 210,223,453,272.73
  5. Step 5: Solve for x
    x = 210,223,453,272.73/527,339.84
  6. Step 6: Final answer
    x = 398,648.91

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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.