Home / 876,678.60-1,315,536.30-639,424.20

Finding the Fourth Proportional to 876,678.60, 1,315,536.30 and 639,424.20

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Solution

The fourth proportional to 876,678.60, 1,315,536.30 and 639,424.20 is: 959,514.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,678.60 : 1,315,536.30 = 639,424.20 : x
  2. Step 2: Convert to fraction form
    876,678.60/1,315,536.30 = 639,424.20/x
  3. Step 3: Cross multiply
    876,678.60x = 1,315,536.30 × 639,424.20
  4. Step 4: Simplify right side
    876,678.60x = 841,185,746,198.46
  5. Step 5: Solve for x
    x = 841,185,746,198.46/876,678.60
  6. Step 6: Final answer
    x = 959,514.41

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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.