Home / 3,118,453.64-4,678,263.42-987,965.72

Finding the Fourth Proportional to 3,118,453.64, 4,678,263.42 and 987,965.72

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Solution

The fourth proportional to 3,118,453.64, 4,678,263.42 and 987,965.72 is: 1,482,133.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118,453.64 : 4,678,263.42 = 987,965.72 : x
  2. Step 2: Convert to fraction form
    3,118,453.64/4,678,263.42 = 987,965.72/x
  3. Step 3: Cross multiply
    3,118,453.64x = 4,678,263.42 × 987,965.72
  4. Step 4: Simplify right side
    3,118,453.64x = 4,621,963,888,089.96
  5. Step 5: Solve for x
    x = 4,621,963,888,089.96/3,118,453.64
  6. Step 6: Final answer
    x = 1,482,133.27

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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.