Home / 1,231,987.95-1,700,125.45-688,131.47

Finding the Fourth Proportional to 1,231,987.95, 1,700,125.45 and 688,131.47

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Solution

The fourth proportional to 1,231,987.95, 1,700,125.45 and 688,131.47 is: 949,611.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,987.95 : 1,700,125.45 = 688,131.47 : x
  2. Step 2: Convert to fraction form
    1,231,987.95/1,700,125.45 = 688,131.47/x
  3. Step 3: Cross multiply
    1,231,987.95x = 1,700,125.45 × 688,131.47
  4. Step 4: Simplify right side
    1,231,987.95x = 1,169,909,825,092.91
  5. Step 5: Solve for x
    x = 1,169,909,825,092.91/1,231,987.95
  6. Step 6: Final answer
    x = 949,611.42

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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.