Home / 1,442,130.56-2,165,156.80-811,487.36

Finding the Fourth Proportional to 1,442,130.56, 2,165,156.80 and 811,487.36

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Solution

The fourth proportional to 1,442,130.56, 2,165,156.80 and 811,487.36 is: 1,218,334.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,442,130.56 : 2,165,156.80 = 811,487.36 : x
  2. Step 2: Convert to fraction form
    1,442,130.56/2,165,156.80 = 811,487.36/x
  3. Step 3: Cross multiply
    1,442,130.56x = 2,165,156.80 × 811,487.36
  4. Step 4: Simplify right side
    1,442,130.56x = 1,756,997,375,618.05
  5. Step 5: Solve for x
    x = 1,756,997,375,618.05/1,442,130.56
  6. Step 6: Final answer
    x = 1,218,334.47

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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.