Home / 572,899.96-790,624.38-391,991.32

Finding the Fourth Proportional to 572,899.96, 790,624.38 and 391,991.32

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Solution

The fourth proportional to 572,899.96, 790,624.38 and 391,991.32 is: 540,963.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,899.96 : 790,624.38 = 391,991.32 : x
  2. Step 2: Convert to fraction form
    572,899.96/790,624.38 = 391,991.32/x
  3. Step 3: Cross multiply
    572,899.96x = 790,624.38 × 391,991.32
  4. Step 4: Simplify right side
    572,899.96x = 309,917,894,340.38
  5. Step 5: Solve for x
    x = 309,917,894,340.38/572,899.96
  6. Step 6: Final answer
    x = 540,963.37

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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.