Home / 3,115,155.40-4,672,878.90-985,406.20

Finding the Fourth Proportional to 3,115,155.40, 4,672,878.90 and 985,406.20

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Solution

The fourth proportional to 3,115,155.40, 4,672,878.90 and 985,406.20 is: 1,478,155.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115,155.40 : 4,672,878.90 = 985,406.20 : x
  2. Step 2: Convert to fraction form
    3,115,155.40/4,672,878.90 = 985,406.20/x
  3. Step 3: Cross multiply
    3,115,155.40x = 4,672,878.90 × 985,406.20
  4. Step 4: Simplify right side
    3,115,155.40x = 4,604,683,839,909.18
  5. Step 5: Solve for x
    x = 4,604,683,839,909.18/3,115,155.40
  6. Step 6: Final answer
    x = 1,478,155.42

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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.