Home / 1,225,311.50-1,689,157.22-811,154.30

Finding the Fourth Proportional to 1,225,311.50, 1,689,157.22 and 811,154.30

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Solution

The fourth proportional to 1,225,311.50, 1,689,157.22 and 811,154.30 is: 1,118,219.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,311.50 : 1,689,157.22 = 811,154.30 : x
  2. Step 2: Convert to fraction form
    1,225,311.50/1,689,157.22 = 811,154.30/x
  3. Step 3: Cross multiply
    1,225,311.50x = 1,689,157.22 × 811,154.30
  4. Step 4: Simplify right side
    1,225,311.50x = 1,370,167,142,379.05
  5. Step 5: Solve for x
    x = 1,370,167,142,379.05/1,225,311.50
  6. Step 6: Final answer
    x = 1,118,219.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.