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Finding the Fourth Proportional to 513,036.54, 707,976.54 and 280,454.22

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Solution

The fourth proportional to 513,036.54, 707,976.54 and 280,454.22 is: 387,019.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,036.54 : 707,976.54 = 280,454.22 : x
  2. Step 2: Convert to fraction form
    513,036.54/707,976.54 = 280,454.22/x
  3. Step 3: Cross multiply
    513,036.54x = 707,976.54 × 280,454.22
  4. Step 4: Simplify right side
    513,036.54x = 198,555,008,304.00
  5. Step 5: Solve for x
    x = 198,555,008,304.00/513,036.54
  6. Step 6: Final answer
    x = 387,019.23

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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.