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Finding the Fourth Proportional to 609,907.60, 841,969.92 and 406,079.20

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Solution

The fourth proportional to 609,907.60, 841,969.92 and 406,079.20 is: 560,587.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,907.60 : 841,969.92 = 406,079.20 : x
  2. Step 2: Convert to fraction form
    609,907.60/841,969.92 = 406,079.20/x
  3. Step 3: Cross multiply
    609,907.60x = 841,969.92 × 406,079.20
  4. Step 4: Simplify right side
    609,907.60x = 341,906,471,537.66
  5. Step 5: Solve for x
    x = 341,906,471,537.66/609,907.60
  6. Step 6: Final answer
    x = 560,587.33

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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.