Home / 1,489,108.20-2,234,585.70-779,645.40

Finding the Fourth Proportional to 1,489,108.20, 2,234,585.70 and 779,645.40

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Solution

The fourth proportional to 1,489,108.20, 2,234,585.70 and 779,645.40 is: 1,169,951.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489,108.20 : 2,234,585.70 = 779,645.40 : x
  2. Step 2: Convert to fraction form
    1,489,108.20/2,234,585.70 = 779,645.40/x
  3. Step 3: Cross multiply
    1,489,108.20x = 2,234,585.70 × 779,645.40
  4. Step 4: Simplify right side
    1,489,108.20x = 1,742,184,461,910.78
  5. Step 5: Solve for x
    x = 1,742,184,461,910.78/1,489,108.20
  6. Step 6: Final answer
    x = 1,169,951.56

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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.