Home / 3,119,281.10-4,678,921.65-989,531.90

Finding the Fourth Proportional to 3,119,281.10, 4,678,921.65 and 989,531.90

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Solution

The fourth proportional to 3,119,281.10, 4,678,921.65 and 989,531.90 is: 1,484,297.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119,281.10 : 4,678,921.65 = 989,531.90 : x
  2. Step 2: Convert to fraction form
    3,119,281.10/4,678,921.65 = 989,531.90/x
  3. Step 3: Cross multiply
    3,119,281.10x = 4,678,921.65 × 989,531.90
  4. Step 4: Simplify right side
    3,119,281.10x = 4,629,942,230,275.64
  5. Step 5: Solve for x
    x = 4,629,942,230,275.64/3,119,281.10
  6. Step 6: Final answer
    x = 1,484,297.85

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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.