Home / 1,331,515.80-1,997,273.70-1,118,939.40

Finding the Fourth Proportional to 1,331,515.80, 1,997,273.70 and 1,118,939.40

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Solution

The fourth proportional to 1,331,515.80, 1,997,273.70 and 1,118,939.40 is: 1,678,409.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331,515.80 : 1,997,273.70 = 1,118,939.40 : x
  2. Step 2: Convert to fraction form
    1,331,515.80/1,997,273.70 = 1,118,939.40/x
  3. Step 3: Cross multiply
    1,331,515.80x = 1,997,273.70 × 1,118,939.40
  4. Step 4: Simplify right side
    1,331,515.80x = 2,234,828,235,513.78
  5. Step 5: Solve for x
    x = 2,234,828,235,513.78/1,331,515.80
  6. Step 6: Final answer
    x = 1,678,409.10

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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.