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Finding the Fourth Proportional to 532,977.40, 798,429.30 and 321,988.60

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Solution

The fourth proportional to 532,977.40, 798,429.30 and 321,988.60 is: 482,356.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,977.40 : 798,429.30 = 321,988.60 : x
  2. Step 2: Convert to fraction form
    532,977.40/798,429.30 = 321,988.60/x
  3. Step 3: Cross multiply
    532,977.40x = 798,429.30 × 321,988.60
  4. Step 4: Simplify right side
    532,977.40x = 257,085,132,505.98
  5. Step 5: Solve for x
    x = 257,085,132,505.98/532,977.40
  6. Step 6: Final answer
    x = 482,356.54

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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.