Home / 1,188,979.80-1,783,469.70-390,068.70

Finding the Fourth Proportional to 1,188,979.80, 1,783,469.70 and 390,068.70

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Solution

The fourth proportional to 1,188,979.80, 1,783,469.70 and 390,068.70 is: 585,103.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,979.80 : 1,783,469.70 = 390,068.70 : x
  2. Step 2: Convert to fraction form
    1,188,979.80/1,783,469.70 = 390,068.70/x
  3. Step 3: Cross multiply
    1,188,979.80x = 1,783,469.70 × 390,068.70
  4. Step 4: Simplify right side
    1,188,979.80x = 695,675,707,368.39
  5. Step 5: Solve for x
    x = 695,675,707,368.39/1,188,979.80
  6. Step 6: Final answer
    x = 585,103.05

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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.