Home / 687,871.44-1,031,264.51-434,618.21

Finding the Fourth Proportional to 687,871.44, 1,031,264.51 and 434,618.21

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Solution

The fourth proportional to 687,871.44, 1,031,264.51 and 434,618.21 is: 651,584.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,871.44 : 1,031,264.51 = 434,618.21 : x
  2. Step 2: Convert to fraction form
    687,871.44/1,031,264.51 = 434,618.21/x
  3. Step 3: Cross multiply
    687,871.44x = 1,031,264.51 × 434,618.21
  4. Step 4: Simplify right side
    687,871.44x = 448,206,328,043.31
  5. Step 5: Solve for x
    x = 448,206,328,043.31/687,871.44
  6. Step 6: Final answer
    x = 651,584.44

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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.