Home / 1,443,073.50-1,991,305.78-976,979.20

Finding the Fourth Proportional to 1,443,073.50, 1,991,305.78 and 976,979.20

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Solution

The fourth proportional to 1,443,073.50, 1,991,305.78 and 976,979.20 is: 1,348,139.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,443,073.50 : 1,991,305.78 = 976,979.20 : x
  2. Step 2: Convert to fraction form
    1,443,073.50/1,991,305.78 = 976,979.20/x
  3. Step 3: Cross multiply
    1,443,073.50x = 1,991,305.78 × 976,979.20
  4. Step 4: Simplify right side
    1,443,073.50x = 1,945,464,327,899.78
  5. Step 5: Solve for x
    x = 1,945,464,327,899.78/1,443,073.50
  6. Step 6: Final answer
    x = 1,348,139.46

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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.