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Finding the Fourth Proportional to 1,361,605.74, 1,879,029.72 and 749,815.35

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Solution

The fourth proportional to 1,361,605.74, 1,879,029.72 and 749,815.35 is: 1,034,752.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,361,605.74 : 1,879,029.72 = 749,815.35 : x
  2. Step 2: Convert to fraction form
    1,361,605.74/1,879,029.72 = 749,815.35/x
  3. Step 3: Cross multiply
    1,361,605.74x = 1,879,029.72 × 749,815.35
  4. Step 4: Simplify right side
    1,361,605.74x = 1,408,925,327,162.20
  5. Step 5: Solve for x
    x = 1,408,925,327,162.20/1,361,605.74
  6. Step 6: Final answer
    x = 1,034,752.78

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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.