Home / 1,018,926.80-1,405,682.76-636,289.36

Finding the Fourth Proportional to 1,018,926.80, 1,405,682.76 and 636,289.36

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Solution

The fourth proportional to 1,018,926.80, 1,405,682.76 and 636,289.36 is: 877,806.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,018,926.80 : 1,405,682.76 = 636,289.36 : x
  2. Step 2: Convert to fraction form
    1,018,926.80/1,405,682.76 = 636,289.36/x
  3. Step 3: Cross multiply
    1,018,926.80x = 1,405,682.76 × 636,289.36
  4. Step 4: Simplify right side
    1,018,926.80x = 894,420,983,723.43
  5. Step 5: Solve for x
    x = 894,420,983,723.43/1,018,926.80
  6. Step 6: Final answer
    x = 877,806.91

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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.