Home / 645,494.20-968,111.70-308,534.20

Finding the Fourth Proportional to 645,494.20, 968,111.70 and 308,534.20

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Solution

The fourth proportional to 645,494.20, 968,111.70 and 308,534.20 is: 462,739.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,494.20 : 968,111.70 = 308,534.20 : x
  2. Step 2: Convert to fraction form
    645,494.20/968,111.70 = 308,534.20/x
  3. Step 3: Cross multiply
    645,494.20x = 968,111.70 × 308,534.20
  4. Step 4: Simplify right side
    645,494.20x = 298,695,568,870.14
  5. Step 5: Solve for x
    x = 298,695,568,870.14/645,494.20
  6. Step 6: Final answer
    x = 462,739.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.