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Finding the Fourth Proportional to 522,616.40, 720,178.44 and 371,289.68

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Solution

The fourth proportional to 522,616.40, 720,178.44 and 371,289.68 is: 511,646.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,616.40 : 720,178.44 = 371,289.68 : x
  2. Step 2: Convert to fraction form
    522,616.40/720,178.44 = 371,289.68/x
  3. Step 3: Cross multiply
    522,616.40x = 720,178.44 × 371,289.68
  4. Step 4: Simplify right side
    522,616.40x = 267,394,822,530.50
  5. Step 5: Solve for x
    x = 267,394,822,530.50/522,616.40
  6. Step 6: Final answer
    x = 511,646.44

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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.