Home / 489,220.18-674,837.13-307,644.10

Finding the Fourth Proportional to 489,220.18, 674,837.13 and 307,644.10

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Solution

The fourth proportional to 489,220.18, 674,837.13 and 307,644.10 is: 424,368.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,220.18 : 674,837.13 = 307,644.10 : x
  2. Step 2: Convert to fraction form
    489,220.18/674,837.13 = 307,644.10/x
  3. Step 3: Cross multiply
    489,220.18x = 674,837.13 × 307,644.10
  4. Step 4: Simplify right side
    489,220.18x = 207,609,661,505.43
  5. Step 5: Solve for x
    x = 207,609,661,505.43/489,220.18
  6. Step 6: Final answer
    x = 424,368.56

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1.5x scale

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.