Home / 1,224,294.80-1,689,438.72-765,615.20

Finding the Fourth Proportional to 1,224,294.80, 1,689,438.72 and 765,615.20

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Solution

The fourth proportional to 1,224,294.80, 1,689,438.72 and 765,615.20 is: 1,056,493.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224,294.80 : 1,689,438.72 = 765,615.20 : x
  2. Step 2: Convert to fraction form
    1,224,294.80/1,689,438.72 = 765,615.20/x
  3. Step 3: Cross multiply
    1,224,294.80x = 1,689,438.72 × 765,615.20
  4. Step 4: Simplify right side
    1,224,294.80x = 1,293,459,963,500.54
  5. Step 5: Solve for x
    x = 1,293,459,963,500.54/1,224,294.80
  6. Step 6: Final answer
    x = 1,056,493.88

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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.