Home / 1,442,855.02-1,990,964.88-831,205.79

Finding the Fourth Proportional to 1,442,855.02, 1,990,964.88 and 831,205.79

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Solution

The fourth proportional to 1,442,855.02, 1,990,964.88 and 831,205.79 is: 1,146,963.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,442,855.02 : 1,990,964.88 = 831,205.79 : x
  2. Step 2: Convert to fraction form
    1,442,855.02/1,990,964.88 = 831,205.79/x
  3. Step 3: Cross multiply
    1,442,855.02x = 1,990,964.88 × 831,205.79
  4. Step 4: Simplify right side
    1,442,855.02x = 1,654,901,531,786.63
  5. Step 5: Solve for x
    x = 1,654,901,531,786.63/1,442,855.02
  6. Step 6: Final answer
    x = 1,146,963.15

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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.