Home / 1,138,302.48-1,707,520.56-428,336.64

Finding the Fourth Proportional to 1,138,302.48, 1,707,520.56 and 428,336.64

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Solution

The fourth proportional to 1,138,302.48, 1,707,520.56 and 428,336.64 is: 642,530.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,302.48 : 1,707,520.56 = 428,336.64 : x
  2. Step 2: Convert to fraction form
    1,138,302.48/1,707,520.56 = 428,336.64/x
  3. Step 3: Cross multiply
    1,138,302.48x = 1,707,520.56 × 428,336.64
  4. Step 4: Simplify right side
    1,138,302.48x = 731,393,619,401.32
  5. Step 5: Solve for x
    x = 731,393,619,401.32/1,138,302.48
  6. Step 6: Final answer
    x = 642,530.11

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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.