Home / 830,045.20-1,245,067.80-711,947.20

Finding the Fourth Proportional to 830,045.20, 1,245,067.80 and 711,947.20

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Solution

The fourth proportional to 830,045.20, 1,245,067.80 and 711,947.20 is: 1,067,920.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,045.20 : 1,245,067.80 = 711,947.20 : x
  2. Step 2: Convert to fraction form
    830,045.20/1,245,067.80 = 711,947.20/x
  3. Step 3: Cross multiply
    830,045.20x = 1,245,067.80 × 711,947.20
  4. Step 4: Simplify right side
    830,045.20x = 886,422,534,020.16
  5. Step 5: Solve for x
    x = 886,422,534,020.16/830,045.20
  6. Step 6: Final answer
    x = 1,067,920.80

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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.