Home / 1,262,709.90-1,891,987.20-729,300.60

Finding the Fourth Proportional to 1,262,709.90, 1,891,987.20 and 729,300.60

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Solution

The fourth proportional to 1,262,709.90, 1,891,987.20 and 729,300.60 is: 1,092,750.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262,709.90 : 1,891,987.20 = 729,300.60 : x
  2. Step 2: Convert to fraction form
    1,262,709.90/1,891,987.20 = 729,300.60/x
  3. Step 3: Cross multiply
    1,262,709.90x = 1,891,987.20 × 729,300.60
  4. Step 4: Simplify right side
    1,262,709.90x = 1,379,827,400,152.32
  5. Step 5: Solve for x
    x = 1,379,827,400,152.32/1,262,709.90
  6. Step 6: Final answer
    x = 1,092,750.92

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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.