Home / 811,943.48-1,217,112-384,728.84

Finding the Fourth Proportional to 811,943.48, 1,217,112 and 384,728.84

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Solution

The fourth proportional to 811,943.48, 1,217,112 and 384,728.84 is: 576,712.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,943.48 : 1,217,112 = 384,728.84 : x
  2. Step 2: Convert to fraction form
    811,943.48/1,217,112 = 384,728.84/x
  3. Step 3: Cross multiply
    811,943.48x = 1,217,112 × 384,728.84
  4. Step 4: Simplify right side
    811,943.48x = 468,258,087,910.08
  5. Step 5: Solve for x
    x = 468,258,087,910.08/811,943.48
  6. Step 6: Final answer
    x = 576,712.66

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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.