Home / 3,118,456.64-4,678,267.92-987,968.72

Finding the Fourth Proportional to 3,118,456.64, 4,678,267.92 and 987,968.72

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Solution

The fourth proportional to 3,118,456.64, 4,678,267.92 and 987,968.72 is: 1,482,137.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118,456.64 : 4,678,267.92 = 987,968.72 : x
  2. Step 2: Convert to fraction form
    3,118,456.64/4,678,267.92 = 987,968.72/x
  3. Step 3: Cross multiply
    3,118,456.64x = 4,678,267.92 × 987,968.72
  4. Step 4: Simplify right side
    3,118,456.64x = 4,621,982,368,739.46
  5. Step 5: Solve for x
    x = 4,621,982,368,739.46/3,118,456.64
  6. Step 6: Final answer
    x = 1,482,137.77

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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.