Home / 1,187,342.89-1,781,033.78-345,940.81

Finding the Fourth Proportional to 1,187,342.89, 1,781,033.78 and 345,940.81

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Solution

The fourth proportional to 1,187,342.89, 1,781,033.78 and 345,940.81 is: 518,916.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,342.89 : 1,781,033.78 = 345,940.81 : x
  2. Step 2: Convert to fraction form
    1,187,342.89/1,781,033.78 = 345,940.81/x
  3. Step 3: Cross multiply
    1,187,342.89x = 1,781,033.78 × 345,940.81
  4. Step 4: Simplify right side
    1,187,342.89x = 616,132,266,760.86
  5. Step 5: Solve for x
    x = 616,132,266,760.86/1,187,342.89
  6. Step 6: Final answer
    x = 518,916.88

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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.