Home / 788,175-1,087,682.76-448,643.28

Finding the Fourth Proportional to 788,175, 1,087,682.76 and 448,643.28

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Solution

The fourth proportional to 788,175, 1,087,682.76 and 448,643.28 is: 619,128.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,175 : 1,087,682.76 = 448,643.28 : x
  2. Step 2: Convert to fraction form
    788,175/1,087,682.76 = 448,643.28/x
  3. Step 3: Cross multiply
    788,175x = 1,087,682.76 × 448,643.28
  4. Step 4: Simplify right side
    788,175x = 487,981,561,045.85
  5. Step 5: Solve for x
    x = 487,981,561,045.85/788,175
  6. Step 6: Final answer
    x = 619,128.44

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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.