Home / 1,120,031.20-1,680,046.80-805,103.20

Finding the Fourth Proportional to 1,120,031.20, 1,680,046.80 and 805,103.20

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Solution

The fourth proportional to 1,120,031.20, 1,680,046.80 and 805,103.20 is: 1,207,654.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,031.20 : 1,680,046.80 = 805,103.20 : x
  2. Step 2: Convert to fraction form
    1,120,031.20/1,680,046.80 = 805,103.20/x
  3. Step 3: Cross multiply
    1,120,031.20x = 1,680,046.80 × 805,103.20
  4. Step 4: Simplify right side
    1,120,031.20x = 1,352,611,054,829.76
  5. Step 5: Solve for x
    x = 1,352,611,054,829.76/1,120,031.20
  6. Step 6: Final answer
    x = 1,207,654.80

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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.