Home / 1,211,266.80-1,816,900.20-813,135.60

Finding the Fourth Proportional to 1,211,266.80, 1,816,900.20 and 813,135.60

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Solution

The fourth proportional to 1,211,266.80, 1,816,900.20 and 813,135.60 is: 1,219,703.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,266.80 : 1,816,900.20 = 813,135.60 : x
  2. Step 2: Convert to fraction form
    1,211,266.80/1,816,900.20 = 813,135.60/x
  3. Step 3: Cross multiply
    1,211,266.80x = 1,816,900.20 × 813,135.60
  4. Step 4: Simplify right side
    1,211,266.80x = 1,477,386,234,267.12
  5. Step 5: Solve for x
    x = 1,477,386,234,267.12/1,211,266.80
  6. Step 6: Final answer
    x = 1,219,703.40

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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.