Home / 872,479.64-1,309,419.30-451,875.80

Finding the Fourth Proportional to 872,479.64, 1,309,419.30 and 451,875.80

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Solution

The fourth proportional to 872,479.64, 1,309,419.30 and 451,875.80 is: 678,176.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,479.64 : 1,309,419.30 = 451,875.80 : x
  2. Step 2: Convert to fraction form
    872,479.64/1,309,419.30 = 451,875.80/x
  3. Step 3: Cross multiply
    872,479.64x = 1,309,419.30 × 451,875.80
  4. Step 4: Simplify right side
    872,479.64x = 591,694,887,175.84
  5. Step 5: Solve for x
    x = 591,694,887,175.84/872,479.64
  6. Step 6: Final answer
    x = 678,176.16

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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.