Home / 5,428,979.40-8,142,885.90-1,439,891.40

Finding the Fourth Proportional to 5,428,979.40, 8,142,885.90 and 1,439,891.40

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Solution

The fourth proportional to 5,428,979.40, 8,142,885.90 and 1,439,891.40 is: 2,159,682.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428,979.40 : 8,142,885.90 = 1,439,891.40 : x
  2. Step 2: Convert to fraction form
    5,428,979.40/8,142,885.90 = 1,439,891.40/x
  3. Step 3: Cross multiply
    5,428,979.40x = 8,142,885.90 × 1,439,891.40
  4. Step 4: Simplify right side
    5,428,979.40x = 11,724,871,378,591.26
  5. Step 5: Solve for x
    x = 11,724,871,378,591.26/5,428,979.40
  6. Step 6: Final answer
    x = 2,159,682.42

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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.