Home / 1,280,290.85-1,766,780.72-699,501.51

Finding the Fourth Proportional to 1,280,290.85, 1,766,780.72 and 699,501.51

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Solution

The fourth proportional to 1,280,290.85, 1,766,780.72 and 699,501.51 is: 965,300.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,290.85 : 1,766,780.72 = 699,501.51 : x
  2. Step 2: Convert to fraction form
    1,280,290.85/1,766,780.72 = 699,501.51/x
  3. Step 3: Cross multiply
    1,280,290.85x = 1,766,780.72 × 699,501.51
  4. Step 4: Simplify right side
    1,280,290.85x = 1,235,865,777,981.38
  5. Step 5: Solve for x
    x = 1,235,865,777,981.38/1,280,290.85
  6. Step 6: Final answer
    x = 965,300.80

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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.