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Finding the Fourth Proportional to 555,290.73, 766,295.28 and 313,559.19

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Solution

The fourth proportional to 555,290.73, 766,295.28 and 313,559.19 is: 432,708.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,290.73 : 766,295.28 = 313,559.19 : x
  2. Step 2: Convert to fraction form
    555,290.73/766,295.28 = 313,559.19/x
  3. Step 3: Cross multiply
    555,290.73x = 766,295.28 × 313,559.19
  4. Step 4: Simplify right side
    555,290.73x = 240,278,927,297.62
  5. Step 5: Solve for x
    x = 240,278,927,297.62/555,290.73
  6. Step 6: Final answer
    x = 432,708.34

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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.