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Finding the Fourth Proportional to 907,891.60, 1,361,837.40 and 719,885.20

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Solution

The fourth proportional to 907,891.60, 1,361,837.40 and 719,885.20 is: 1,079,827.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,891.60 : 1,361,837.40 = 719,885.20 : x
  2. Step 2: Convert to fraction form
    907,891.60/1,361,837.40 = 719,885.20/x
  3. Step 3: Cross multiply
    907,891.60x = 1,361,837.40 × 719,885.20
  4. Step 4: Simplify right side
    907,891.60x = 980,366,589,066.48
  5. Step 5: Solve for x
    x = 980,366,589,066.48/907,891.60
  6. Step 6: Final answer
    x = 1,079,827.80

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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.