Home / 830,521.80-1,245,782.70-814,775.40

Finding the Fourth Proportional to 830,521.80, 1,245,782.70 and 814,775.40

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Solution

The fourth proportional to 830,521.80, 1,245,782.70 and 814,775.40 is: 1,222,163.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,521.80 : 1,245,782.70 = 814,775.40 : x
  2. Step 2: Convert to fraction form
    830,521.80/1,245,782.70 = 814,775.40/x
  3. Step 3: Cross multiply
    830,521.80x = 1,245,782.70 × 814,775.40
  4. Step 4: Simplify right side
    830,521.80x = 1,015,033,097,705.58
  5. Step 5: Solve for x
    x = 1,015,033,097,705.58/830,521.80
  6. Step 6: Final answer
    x = 1,222,163.10

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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.