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Finding the Fourth Proportional to 636,535.57, 878,401.54 and 350,055.66

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Solution

The fourth proportional to 636,535.57, 878,401.54 and 350,055.66 is: 483,067.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,535.57 : 878,401.54 = 350,055.66 : x
  2. Step 2: Convert to fraction form
    636,535.57/878,401.54 = 350,055.66/x
  3. Step 3: Cross multiply
    636,535.57x = 878,401.54 × 350,055.66
  4. Step 4: Simplify right side
    636,535.57x = 307,489,430,829.72
  5. Step 5: Solve for x
    x = 307,489,430,829.72/636,535.57
  6. Step 6: Final answer
    x = 483,067.16

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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.