Home / 3,985,667.80-5,979,084.90-1,289,534.20

Finding the Fourth Proportional to 3,985,667.80, 5,979,084.90 and 1,289,534.20

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Solution

The fourth proportional to 3,985,667.80, 5,979,084.90 and 1,289,534.20 is: 1,934,489.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985,667.80 : 5,979,084.90 = 1,289,534.20 : x
  2. Step 2: Convert to fraction form
    3,985,667.80/5,979,084.90 = 1,289,534.20/x
  3. Step 3: Cross multiply
    3,985,667.80x = 5,979,084.90 × 1,289,534.20
  4. Step 4: Simplify right side
    3,985,667.80x = 7,710,234,463,253.58
  5. Step 5: Solve for x
    x = 7,710,234,463,253.58/3,985,667.80
  6. Step 6: Final answer
    x = 1,934,489.99

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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.