Home / 843,143.12-1,264,731.09-310,389.92

Finding the Fourth Proportional to 843,143.12, 1,264,731.09 and 310,389.92

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Solution

The fourth proportional to 843,143.12, 1,264,731.09 and 310,389.92 is: 465,590.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    843,143.12 : 1,264,731.09 = 310,389.92 : x
  2. Step 2: Convert to fraction form
    843,143.12/1,264,731.09 = 310,389.92/x
  3. Step 3: Cross multiply
    843,143.12x = 1,264,731.09 × 310,389.92
  4. Step 4: Simplify right side
    843,143.12x = 392,559,781,846.61
  5. Step 5: Solve for x
    x = 392,559,781,846.61/843,143.12
  6. Step 6: Final answer
    x = 465,590.92

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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.