Home / 879,891.60-1,319,837.40-459,112.80

Finding the Fourth Proportional to 879,891.60, 1,319,837.40 and 459,112.80

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Solution

The fourth proportional to 879,891.60, 1,319,837.40 and 459,112.80 is: 688,669.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,891.60 : 1,319,837.40 = 459,112.80 : x
  2. Step 2: Convert to fraction form
    879,891.60/1,319,837.40 = 459,112.80/x
  3. Step 3: Cross multiply
    879,891.60x = 1,319,837.40 × 459,112.80
  4. Step 4: Simplify right side
    879,891.60x = 605,954,244,258.72
  5. Step 5: Solve for x
    x = 605,954,244,258.72/879,891.60
  6. Step 6: Final answer
    x = 688,669.20

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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.