Home / 1,108,759.80-1,663,139.70-911,929.80

Finding the Fourth Proportional to 1,108,759.80, 1,663,139.70 and 911,929.80

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Solution

The fourth proportional to 1,108,759.80, 1,663,139.70 and 911,929.80 is: 1,367,894.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,108,759.80 : 1,663,139.70 = 911,929.80 : x
  2. Step 2: Convert to fraction form
    1,108,759.80/1,663,139.70 = 911,929.80/x
  3. Step 3: Cross multiply
    1,108,759.80x = 1,663,139.70 × 911,929.80
  4. Step 4: Simplify right side
    1,108,759.80x = 1,516,666,653,993.06
  5. Step 5: Solve for x
    x = 1,516,666,653,993.06/1,108,759.80
  6. Step 6: Final answer
    x = 1,367,894.70

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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.