Home / 1,231,978.76-1,700,112.76-688,122.28

Finding the Fourth Proportional to 1,231,978.76, 1,700,112.76 and 688,122.28

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Solution

The fourth proportional to 1,231,978.76, 1,700,112.76 and 688,122.28 is: 949,598.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,978.76 : 1,700,112.76 = 688,122.28 : x
  2. Step 2: Convert to fraction form
    1,231,978.76/1,700,112.76 = 688,122.28/x
  3. Step 3: Cross multiply
    1,231,978.76x = 1,700,112.76 × 688,122.28
  4. Step 4: Simplify right side
    1,231,978.76x = 1,169,885,468,668.29
  5. Step 5: Solve for x
    x = 1,169,885,468,668.29/1,231,978.76
  6. Step 6: Final answer
    x = 949,598.73

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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.