Home / 921,550.56-1,271,694.72-513,696.80

Finding the Fourth Proportional to 921,550.56, 1,271,694.72 and 513,696.80

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Solution

The fourth proportional to 921,550.56, 1,271,694.72 and 513,696.80 is: 708,876.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,550.56 : 1,271,694.72 = 513,696.80 : x
  2. Step 2: Convert to fraction form
    921,550.56/1,271,694.72 = 513,696.80/x
  3. Step 3: Cross multiply
    921,550.56x = 1,271,694.72 × 513,696.80
  4. Step 4: Simplify right side
    921,550.56x = 653,265,508,240.90
  5. Step 5: Solve for x
    x = 653,265,508,240.90/921,550.56
  6. Step 6: Final answer
    x = 708,876.47

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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.