Home / 1,298,762.20-1,791,131.32-815,372.40

Finding the Fourth Proportional to 1,298,762.20, 1,791,131.32 and 815,372.40

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Solution

The fourth proportional to 1,298,762.20, 1,791,131.32 and 815,372.40 is: 1,124,485.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,762.20 : 1,791,131.32 = 815,372.40 : x
  2. Step 2: Convert to fraction form
    1,298,762.20/1,791,131.32 = 815,372.40/x
  3. Step 3: Cross multiply
    1,298,762.20x = 1,791,131.32 × 815,372.40
  4. Step 4: Simplify right side
    1,298,762.20x = 1,460,439,043,103.57
  5. Step 5: Solve for x
    x = 1,460,439,043,103.57/1,298,762.20
  6. Step 6: Final answer
    x = 1,124,485.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.