Home / 1,239,694.89-1,710,686.07-688,441.70

Finding the Fourth Proportional to 1,239,694.89, 1,710,686.07 and 688,441.70

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Solution

The fourth proportional to 1,239,694.89, 1,710,686.07 and 688,441.70 is: 949,997.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,694.89 : 1,710,686.07 = 688,441.70 : x
  2. Step 2: Convert to fraction form
    1,239,694.89/1,710,686.07 = 688,441.70/x
  3. Step 3: Cross multiply
    1,239,694.89x = 1,710,686.07 × 688,441.70
  4. Step 4: Simplify right side
    1,239,694.89x = 1,177,707,617,643.69
  5. Step 5: Solve for x
    x = 1,177,707,617,643.69/1,239,694.89
  6. Step 6: Final answer
    x = 949,997.96

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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.