Home / 819,319.32-1,228,713.03-313,853.40

Finding the Fourth Proportional to 819,319.32, 1,228,713.03 and 313,853.40

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Solution

The fourth proportional to 819,319.32, 1,228,713.03 and 313,853.40 is: 470,678.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,319.32 : 1,228,713.03 = 313,853.40 : x
  2. Step 2: Convert to fraction form
    819,319.32/1,228,713.03 = 313,853.40/x
  3. Step 3: Cross multiply
    819,319.32x = 1,228,713.03 × 313,853.40
  4. Step 4: Simplify right side
    819,319.32x = 385,635,762,089.80
  5. Step 5: Solve for x
    x = 385,635,762,089.80/819,319.32
  6. Step 6: Final answer
    x = 470,678.22

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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.