Home / 641,402.69-884,411.38-479,739.65

Finding the Fourth Proportional to 641,402.69, 884,411.38 and 479,739.65

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Solution

The fourth proportional to 641,402.69, 884,411.38 and 479,739.65 is: 661,498.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,402.69 : 884,411.38 = 479,739.65 : x
  2. Step 2: Convert to fraction form
    641,402.69/884,411.38 = 479,739.65/x
  3. Step 3: Cross multiply
    641,402.69x = 884,411.38 × 479,739.65
  4. Step 4: Simplify right side
    641,402.69x = 424,287,206,908.90
  5. Step 5: Solve for x
    x = 424,287,206,908.90/641,402.69
  6. Step 6: Final answer
    x = 661,498.95

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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.