Home / 784,297.31-1,176,322.91-215,721.05

Finding the Fourth Proportional to 784,297.31, 1,176,322.91 and 215,721.05

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Solution

The fourth proportional to 784,297.31, 1,176,322.91 and 215,721.05 is: 323,547.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,297.31 : 1,176,322.91 = 215,721.05 : x
  2. Step 2: Convert to fraction form
    784,297.31/1,176,322.91 = 215,721.05/x
  3. Step 3: Cross multiply
    784,297.31x = 1,176,322.91 × 215,721.05
  4. Step 4: Simplify right side
    784,297.31x = 253,757,606,324.04
  5. Step 5: Solve for x
    x = 253,757,606,324.04/784,297.31
  6. Step 6: Final answer
    x = 323,547.72

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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.