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Finding the Fourth Proportional to 555,493.38, 766,628.07 and 313,820.31

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Solution

The fourth proportional to 555,493.38, 766,628.07 and 313,820.31 is: 433,098.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,493.38 : 766,628.07 = 313,820.31 : x
  2. Step 2: Convert to fraction form
    555,493.38/766,628.07 = 313,820.31/x
  3. Step 3: Cross multiply
    555,493.38x = 766,628.07 × 313,820.31
  4. Step 4: Simplify right side
    555,493.38x = 240,583,458,582.10
  5. Step 5: Solve for x
    x = 240,583,458,582.10/555,493.38
  6. Step 6: Final answer
    x = 433,098.70

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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.