Home / 641,348.28-885,333.24-399,751.20

Finding the Fourth Proportional to 641,348.28, 885,333.24 and 399,751.20

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Solution

The fourth proportional to 641,348.28, 885,333.24 and 399,751.20 is: 551,826.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,348.28 : 885,333.24 = 399,751.20 : x
  2. Step 2: Convert to fraction form
    641,348.28/885,333.24 = 399,751.20/x
  3. Step 3: Cross multiply
    641,348.28x = 885,333.24 × 399,751.20
  4. Step 4: Simplify right side
    641,348.28x = 353,913,025,089.89
  5. Step 5: Solve for x
    x = 353,913,025,089.89/641,348.28
  6. Step 6: Final answer
    x = 551,826.58

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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.