Home / 1,129,883.79-1,559,335.79-639,940.46

Finding the Fourth Proportional to 1,129,883.79, 1,559,335.79 and 639,940.46

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Solution

The fourth proportional to 1,129,883.79, 1,559,335.79 and 639,940.46 is: 883,172.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,883.79 : 1,559,335.79 = 639,940.46 : x
  2. Step 2: Convert to fraction form
    1,129,883.79/1,559,335.79 = 639,940.46/x
  3. Step 3: Cross multiply
    1,129,883.79x = 1,559,335.79 × 639,940.46
  4. Step 4: Simplify right side
    1,129,883.79x = 997,882,062,747.06
  5. Step 5: Solve for x
    x = 997,882,062,747.06/1,129,883.79
  6. Step 6: Final answer
    x = 883,172.30

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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.