Home / 1,239,903.89-1,711,124.07-688,621.75

Finding the Fourth Proportional to 1,239,903.89, 1,711,124.07 and 688,621.75

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Solution

The fourth proportional to 1,239,903.89, 1,711,124.07 and 688,621.75 is: 950,329.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,903.89 : 1,711,124.07 = 688,621.75 : x
  2. Step 2: Convert to fraction form
    1,239,903.89/1,711,124.07 = 688,621.75/x
  3. Step 3: Cross multiply
    1,239,903.89x = 1,711,124.07 × 688,621.75
  4. Step 4: Simplify right side
    1,239,903.89x = 1,178,317,258,188.95
  5. Step 5: Solve for x
    x = 1,178,317,258,188.95/1,239,903.89
  6. Step 6: Final answer
    x = 950,329.51

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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.