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Finding the Fourth Proportional to 917,501.80, 1,375,693.80 and 411,964.60

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Solution

The fourth proportional to 917,501.80, 1,375,693.80 and 411,964.60 is: 617,695.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,501.80 : 1,375,693.80 = 411,964.60 : x
  2. Step 2: Convert to fraction form
    917,501.80/1,375,693.80 = 411,964.60/x
  3. Step 3: Cross multiply
    917,501.80x = 1,375,693.80 × 411,964.60
  4. Step 4: Simplify right side
    917,501.80x = 566,737,146,039.48
  5. Step 5: Solve for x
    x = 566,737,146,039.48/917,501.80
  6. Step 6: Final answer
    x = 617,695.95

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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.