Home / 1,222,281.12-1,686,611.15-678,439.83

Finding the Fourth Proportional to 1,222,281.12, 1,686,611.15 and 678,439.83

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Solution

The fourth proportional to 1,222,281.12, 1,686,611.15 and 678,439.83 is: 936,171.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,281.12 : 1,686,611.15 = 678,439.83 : x
  2. Step 2: Convert to fraction form
    1,222,281.12/1,686,611.15 = 678,439.83/x
  3. Step 3: Cross multiply
    1,222,281.12x = 1,686,611.15 × 678,439.83
  4. Step 4: Simplify right side
    1,222,281.12x = 1,144,264,178,489.91
  5. Step 5: Solve for x
    x = 1,144,264,178,489.91/1,222,281.12
  6. Step 6: Final answer
    x = 936,171.03

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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.