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Finding the Fourth Proportional to 536,916.80, 805,989.60 and 315,425.60

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Solution

The fourth proportional to 536,916.80, 805,989.60 and 315,425.60 is: 473,499.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,916.80 : 805,989.60 = 315,425.60 : x
  2. Step 2: Convert to fraction form
    536,916.80/805,989.60 = 315,425.60/x
  3. Step 3: Cross multiply
    536,916.80x = 805,989.60 × 315,425.60
  4. Step 4: Simplify right side
    536,916.80x = 254,229,753,173.76
  5. Step 5: Solve for x
    x = 254,229,753,173.76/536,916.80
  6. Step 6: Final answer
    x = 473,499.35

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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.