Home / 817,260.88-1,127,975.34-511,479.40

Finding the Fourth Proportional to 817,260.88, 1,127,975.34 and 511,479.40

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Solution

The fourth proportional to 817,260.88, 1,127,975.34 and 511,479.40 is: 705,938.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,260.88 : 1,127,975.34 = 511,479.40 : x
  2. Step 2: Convert to fraction form
    817,260.88/1,127,975.34 = 511,479.40/x
  3. Step 3: Cross multiply
    817,260.88x = 1,127,975.34 × 511,479.40
  4. Step 4: Simplify right side
    817,260.88x = 576,936,150,118.00
  5. Step 5: Solve for x
    x = 576,936,150,118.00/817,260.88
  6. Step 6: Final answer
    x = 705,938.78

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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.