Home / 758,129.54-1,045,780.18-489,857.54

Finding the Fourth Proportional to 758,129.54, 1,045,780.18 and 489,857.54

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Solution

The fourth proportional to 758,129.54, 1,045,780.18 and 489,857.54 is: 675,720.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,129.54 : 1,045,780.18 = 489,857.54 : x
  2. Step 2: Convert to fraction form
    758,129.54/1,045,780.18 = 489,857.54/x
  3. Step 3: Cross multiply
    758,129.54x = 1,045,780.18 × 489,857.54
  4. Step 4: Simplify right side
    758,129.54x = 512,283,306,355.56
  5. Step 5: Solve for x
    x = 512,283,306,355.56/758,129.54
  6. Step 6: Final answer
    x = 675,720.02

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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.