Home / 1,245,333.80-1,868,000.70-1,133,140.70

Finding the Fourth Proportional to 1,245,333.80, 1,868,000.70 and 1,133,140.70

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Solution

The fourth proportional to 1,245,333.80, 1,868,000.70 and 1,133,140.70 is: 1,699,711.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,333.80 : 1,868,000.70 = 1,133,140.70 : x
  2. Step 2: Convert to fraction form
    1,245,333.80/1,868,000.70 = 1,133,140.70/x
  3. Step 3: Cross multiply
    1,245,333.80x = 1,868,000.70 × 1,133,140.70
  4. Step 4: Simplify right side
    1,245,333.80x = 2,116,707,620,798.49
  5. Step 5: Solve for x
    x = 2,116,707,620,798.49/1,245,333.80
  6. Step 6: Final answer
    x = 1,699,711.05

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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.