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Finding the Fourth Proportional to 527,987.60, 791,981.40 and 328,533.20

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Solution

The fourth proportional to 527,987.60, 791,981.40 and 328,533.20 is: 492,799.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,987.60 : 791,981.40 = 328,533.20 : x
  2. Step 2: Convert to fraction form
    527,987.60/791,981.40 = 328,533.20/x
  3. Step 3: Cross multiply
    527,987.60x = 791,981.40 × 328,533.20
  4. Step 4: Simplify right side
    527,987.60x = 260,192,183,682.48
  5. Step 5: Solve for x
    x = 260,192,183,682.48/527,987.60
  6. Step 6: Final answer
    x = 492,799.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.