Home / 1,109,207.96-1,663,995.80-389,362.95

Finding the Fourth Proportional to 1,109,207.96, 1,663,995.80 and 389,362.95

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Solution

The fourth proportional to 1,109,207.96, 1,663,995.80 and 389,362.95 is: 584,108.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,109,207.96 : 1,663,995.80 = 389,362.95 : x
  2. Step 2: Convert to fraction form
    1,109,207.96/1,663,995.80 = 389,362.95/x
  3. Step 3: Cross multiply
    1,109,207.96x = 1,663,995.80 × 389,362.95
  4. Step 4: Simplify right side
    1,109,207.96x = 647,898,310,289.03
  5. Step 5: Solve for x
    x = 647,898,310,289.03/1,109,207.96
  6. Step 6: Final answer
    x = 584,108.96

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Double scale
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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.