Home / 839,920.90-1,258,897.20-629,312.80

Finding the Fourth Proportional to 839,920.90, 1,258,897.20 and 629,312.80

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Solution

The fourth proportional to 839,920.90, 1,258,897.20 and 629,312.80 is: 943,231.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,920.90 : 1,258,897.20 = 629,312.80 : x
  2. Step 2: Convert to fraction form
    839,920.90/1,258,897.20 = 629,312.80/x
  3. Step 3: Cross multiply
    839,920.90x = 1,258,897.20 × 629,312.80
  4. Step 4: Simplify right side
    839,920.90x = 792,240,121,844.16
  5. Step 5: Solve for x
    x = 792,240,121,844.16/839,920.90
  6. Step 6: Final answer
    x = 943,231.82

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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.