Home / 738,780.75-1,017,478.67-636,768.54

Finding the Fourth Proportional to 738,780.75, 1,017,478.67 and 636,768.54

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Solution

The fourth proportional to 738,780.75, 1,017,478.67 and 636,768.54 is: 876,983.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,780.75 : 1,017,478.67 = 636,768.54 : x
  2. Step 2: Convert to fraction form
    738,780.75/1,017,478.67 = 636,768.54/x
  3. Step 3: Cross multiply
    738,780.75x = 1,017,478.67 × 636,768.54
  4. Step 4: Simplify right side
    738,780.75x = 647,898,403,993.20
  5. Step 5: Solve for x
    x = 647,898,403,993.20/738,780.75
  6. Step 6: Final answer
    x = 876,983.33

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Double scale
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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.