Home / 687,808.80-1,031,713.20-448,664.40

Finding the Fourth Proportional to 687,808.80, 1,031,713.20 and 448,664.40

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Solution

The fourth proportional to 687,808.80, 1,031,713.20 and 448,664.40 is: 672,996.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,808.80 : 1,031,713.20 = 448,664.40 : x
  2. Step 2: Convert to fraction form
    687,808.80/1,031,713.20 = 448,664.40/x
  3. Step 3: Cross multiply
    687,808.80x = 1,031,713.20 × 448,664.40
  4. Step 4: Simplify right side
    687,808.80x = 462,892,983,850.08
  5. Step 5: Solve for x
    x = 462,892,983,850.08/687,808.80
  6. Step 6: Final answer
    x = 672,996.60

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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.