Home / 753,862.15-1,130,268.34-280,420.39

Finding the Fourth Proportional to 753,862.15, 1,130,268.34 and 280,420.39

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Solution

The fourth proportional to 753,862.15, 1,130,268.34 and 280,420.39 is: 420,435.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,862.15 : 1,130,268.34 = 280,420.39 : x
  2. Step 2: Convert to fraction form
    753,862.15/1,130,268.34 = 280,420.39/x
  3. Step 3: Cross multiply
    753,862.15x = 1,130,268.34 × 280,420.39
  4. Step 4: Simplify right side
    753,862.15x = 316,950,288,707.45
  5. Step 5: Solve for x
    x = 316,950,288,707.45/753,862.15
  6. Step 6: Final answer
    x = 420,435.34

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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.