Home / 721,938.97-996,287.57-395,246.51

Finding the Fourth Proportional to 721,938.97, 996,287.57 and 395,246.51

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Solution

The fourth proportional to 721,938.97, 996,287.57 and 395,246.51 is: 545,446.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,938.97 : 996,287.57 = 395,246.51 : x
  2. Step 2: Convert to fraction form
    721,938.97/996,287.57 = 395,246.51/x
  3. Step 3: Cross multiply
    721,938.97x = 996,287.57 × 395,246.51
  4. Step 4: Simplify right side
    721,938.97x = 393,779,184,998.88
  5. Step 5: Solve for x
    x = 393,779,184,998.88/721,938.97
  6. Step 6: Final answer
    x = 545,446.64

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Double scale
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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.