Home / 868,031.04-1,302,713.28-388,407.36

Finding the Fourth Proportional to 868,031.04, 1,302,713.28 and 388,407.36

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Solution

The fourth proportional to 868,031.04, 1,302,713.28 and 388,407.36 is: 582,909.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,031.04 : 1,302,713.28 = 388,407.36 : x
  2. Step 2: Convert to fraction form
    868,031.04/1,302,713.28 = 388,407.36/x
  3. Step 3: Cross multiply
    868,031.04x = 1,302,713.28 × 388,407.36
  4. Step 4: Simplify right side
    868,031.04x = 505,983,425,921.74
  5. Step 5: Solve for x
    x = 505,983,425,921.74/868,031.04
  6. Step 6: Final answer
    x = 582,909.37

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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.