Home / 1,780,823.28-2,671,399.92-643,869.84

Finding the Fourth Proportional to 1,780,823.28, 2,671,399.92 and 643,869.84

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Solution

The fourth proportional to 1,780,823.28, 2,671,399.92 and 643,869.84 is: 965,864.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,780,823.28 : 2,671,399.92 = 643,869.84 : x
  2. Step 2: Convert to fraction form
    1,780,823.28/2,671,399.92 = 643,869.84/x
  3. Step 3: Cross multiply
    1,780,823.28x = 2,671,399.92 × 643,869.84
  4. Step 4: Simplify right side
    1,780,823.28x = 1,720,033,839,066.41
  5. Step 5: Solve for x
    x = 1,720,033,839,066.41/1,780,823.28
  6. Step 6: Final answer
    x = 965,864.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.