Home / 3,118,807.80-4,679,961.30-1,321,385.40

Finding the Fourth Proportional to 3,118,807.80, 4,679,961.30 and 1,321,385.40

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Solution

The fourth proportional to 3,118,807.80, 4,679,961.30 and 1,321,385.40 is: 1,982,819.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118,807.80 : 4,679,961.30 = 1,321,385.40 : x
  2. Step 2: Convert to fraction form
    3,118,807.80/4,679,961.30 = 1,321,385.40/x
  3. Step 3: Cross multiply
    3,118,807.80x = 4,679,961.30 × 1,321,385.40
  4. Step 4: Simplify right side
    3,118,807.80x = 6,184,032,534,385.02
  5. Step 5: Solve for x
    x = 6,184,032,534,385.02/3,118,807.80
  6. Step 6: Final answer
    x = 1,982,819.38

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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.