Home / 1,299,040.72-1,948,755.48-400,407.76

Finding the Fourth Proportional to 1,299,040.72, 1,948,755.48 and 400,407.76

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Solution

The fourth proportional to 1,299,040.72, 1,948,755.48 and 400,407.76 is: 600,671.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299,040.72 : 1,948,755.48 = 400,407.76 : x
  2. Step 2: Convert to fraction form
    1,299,040.72/1,948,755.48 = 400,407.76/x
  3. Step 3: Cross multiply
    1,299,040.72x = 1,948,755.48 × 400,407.76
  4. Step 4: Simplify right side
    1,299,040.72x = 780,296,816,534.53
  5. Step 5: Solve for x
    x = 780,296,816,534.53/1,299,040.72
  6. Step 6: Final answer
    x = 600,671.56

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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.