Home / 1,442,555.81-1,990,553.57-830,907.50

Finding the Fourth Proportional to 1,442,555.81, 1,990,553.57 and 830,907.50

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Solution

The fourth proportional to 1,442,555.81, 1,990,553.57 and 830,907.50 is: 1,146,552.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,442,555.81 : 1,990,553.57 = 830,907.50 : x
  2. Step 2: Convert to fraction form
    1,442,555.81/1,990,553.57 = 830,907.50/x
  3. Step 3: Cross multiply
    1,442,555.81x = 1,990,553.57 × 830,907.50
  4. Step 4: Simplify right side
    1,442,555.81x = 1,653,965,876,357.47
  5. Step 5: Solve for x
    x = 1,653,965,876,357.47/1,442,555.81
  6. Step 6: Final answer
    x = 1,146,552.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.