Home / 638,679.13-881,336.96-366,555.51

Finding the Fourth Proportional to 638,679.13, 881,336.96 and 366,555.51

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Solution

The fourth proportional to 638,679.13, 881,336.96 and 366,555.51 is: 505,823.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,679.13 : 881,336.96 = 366,555.51 : x
  2. Step 2: Convert to fraction form
    638,679.13/881,336.96 = 366,555.51/x
  3. Step 3: Cross multiply
    638,679.13x = 881,336.96 × 366,555.51
  4. Step 4: Simplify right side
    638,679.13x = 323,058,918,854.65
  5. Step 5: Solve for x
    x = 323,058,918,854.65/638,679.13
  6. Step 6: Final answer
    x = 505,823.51

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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.