Home / 644,990.29-890,097.26-354,614.13

Finding the Fourth Proportional to 644,990.29, 890,097.26 and 354,614.13

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Solution

The fourth proportional to 644,990.29, 890,097.26 and 354,614.13 is: 489,373.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,990.29 : 890,097.26 = 354,614.13 : x
  2. Step 2: Convert to fraction form
    644,990.29/890,097.26 = 354,614.13/x
  3. Step 3: Cross multiply
    644,990.29x = 890,097.26 × 354,614.13
  4. Step 4: Simplify right side
    644,990.29x = 315,641,063,697.21
  5. Step 5: Solve for x
    x = 315,641,063,697.21/644,990.29
  6. Step 6: Final answer
    x = 489,373.36

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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.