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Finding the Fourth Proportional to 526,970.70, 727,221.33 and 285,253.20

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Solution

The fourth proportional to 526,970.70, 727,221.33 and 285,253.20 is: 393,650.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,970.70 : 727,221.33 = 285,253.20 : x
  2. Step 2: Convert to fraction form
    526,970.70/727,221.33 = 285,253.20/x
  3. Step 3: Cross multiply
    526,970.70x = 727,221.33 × 285,253.20
  4. Step 4: Simplify right side
    526,970.70x = 207,442,211,490.76
  5. Step 5: Solve for x
    x = 207,442,211,490.76/526,970.70
  6. Step 6: Final answer
    x = 393,650.37

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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.