Home / 875,968.40-1,311,328.20-520,799.60

Finding the Fourth Proportional to 875,968.40, 1,311,328.20 and 520,799.60

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Solution

The fourth proportional to 875,968.40, 1,311,328.20 and 520,799.60 is: 779,639.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,968.40 : 1,311,328.20 = 520,799.60 : x
  2. Step 2: Convert to fraction form
    875,968.40/1,311,328.20 = 520,799.60/x
  3. Step 3: Cross multiply
    875,968.40x = 1,311,328.20 × 520,799.60
  4. Step 4: Simplify right side
    875,968.40x = 682,939,202,028.72
  5. Step 5: Solve for x
    x = 682,939,202,028.72/875,968.40
  6. Step 6: Final answer
    x = 779,639.09

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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.