Home / 638,867.10-881,637.34-366,987.65

Finding the Fourth Proportional to 638,867.10, 881,637.34 and 366,987.65

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Solution

The fourth proportional to 638,867.10, 881,637.34 and 366,987.65 is: 506,443.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,867.10 : 881,637.34 = 366,987.65 : x
  2. Step 2: Convert to fraction form
    638,867.10/881,637.34 = 366,987.65/x
  3. Step 3: Cross multiply
    638,867.10x = 881,637.34 × 366,987.65
  4. Step 4: Simplify right side
    638,867.10x = 323,550,015,558.85
  5. Step 5: Solve for x
    x = 323,550,015,558.85/638,867.10
  6. Step 6: Final answer
    x = 506,443.38

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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.