Home / 718,113.27-990,951.26-395,805.63

Finding the Fourth Proportional to 718,113.27, 990,951.26 and 395,805.63

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Solution

The fourth proportional to 718,113.27, 990,951.26 and 395,805.63 is: 546,186.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,113.27 : 990,951.26 = 395,805.63 : x
  2. Step 2: Convert to fraction form
    718,113.27/990,951.26 = 395,805.63/x
  3. Step 3: Cross multiply
    718,113.27x = 990,951.26 × 395,805.63
  4. Step 4: Simplify right side
    718,113.27x = 392,224,085,784.57
  5. Step 5: Solve for x
    x = 392,224,085,784.57/718,113.27
  6. Step 6: Final answer
    x = 546,186.93

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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.