Home / 638,867.35-881,637.68-366,987.90

Finding the Fourth Proportional to 638,867.35, 881,637.68 and 366,987.90

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Solution

The fourth proportional to 638,867.35, 881,637.68 and 366,987.90 is: 506,443.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,867.35 : 881,637.68 = 366,987.90 : x
  2. Step 2: Convert to fraction form
    638,867.35/881,637.68 = 366,987.90/x
  3. Step 3: Cross multiply
    638,867.35x = 881,637.68 × 366,987.90
  4. Step 4: Simplify right side
    638,867.35x = 323,550,360,744.07
  5. Step 5: Solve for x
    x = 323,550,360,744.07/638,867.35
  6. Step 6: Final answer
    x = 506,443.73

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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.