Home / 1,386,999.90-2,080,499.85-489,455.10

Finding the Fourth Proportional to 1,386,999.90, 2,080,499.85 and 489,455.10

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Solution

The fourth proportional to 1,386,999.90, 2,080,499.85 and 489,455.10 is: 734,182.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,999.90 : 2,080,499.85 = 489,455.10 : x
  2. Step 2: Convert to fraction form
    1,386,999.90/2,080,499.85 = 489,455.10/x
  3. Step 3: Cross multiply
    1,386,999.90x = 2,080,499.85 × 489,455.10
  4. Step 4: Simplify right side
    1,386,999.90x = 1,018,311,262,131.74
  5. Step 5: Solve for x
    x = 1,018,311,262,131.74/1,386,999.90
  6. Step 6: Final answer
    x = 734,182.65

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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.