Home / 486,623.58-671,559.72-279,891.63

Finding the Fourth Proportional to 486,623.58, 671,559.72 and 279,891.63

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Solution

The fourth proportional to 486,623.58, 671,559.72 and 279,891.63 is: 386,261.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,623.58 : 671,559.72 = 279,891.63 : x
  2. Step 2: Convert to fraction form
    486,623.58/671,559.72 = 279,891.63/x
  3. Step 3: Cross multiply
    486,623.58x = 671,559.72 × 279,891.63
  4. Step 4: Simplify right side
    486,623.58x = 187,963,944,673.14
  5. Step 5: Solve for x
    x = 187,963,944,673.14/486,623.58
  6. Step 6: Final answer
    x = 386,261.48

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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.