Home / 1,231,978.59-1,700,112.34-688,122.31

Finding the Fourth Proportional to 1,231,978.59, 1,700,112.34 and 688,122.31

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Solution

The fourth proportional to 1,231,978.59, 1,700,112.34 and 688,122.31 is: 949,598.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,978.59 : 1,700,112.34 = 688,122.31 : x
  2. Step 2: Convert to fraction form
    1,231,978.59/1,700,112.34 = 688,122.31/x
  3. Step 3: Cross multiply
    1,231,978.59x = 1,700,112.34 × 688,122.31
  4. Step 4: Simplify right side
    1,231,978.59x = 1,169,885,230,660.31
  5. Step 5: Solve for x
    x = 1,169,885,230,660.31/1,231,978.59
  6. Step 6: Final answer
    x = 949,598.67

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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.