Home / 911,191.90-1,366,825.21-312,564.74

Finding the Fourth Proportional to 911,191.90, 1,366,825.21 and 312,564.74

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Solution

The fourth proportional to 911,191.90, 1,366,825.21 and 312,564.74 is: 468,859.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,191.90 : 1,366,825.21 = 312,564.74 : x
  2. Step 2: Convert to fraction form
    911,191.90/1,366,825.21 = 312,564.74/x
  3. Step 3: Cross multiply
    911,191.90x = 1,366,825.21 × 312,564.74
  4. Step 4: Simplify right side
    911,191.90x = 427,221,366,389.10
  5. Step 5: Solve for x
    x = 427,221,366,389.10/911,191.90
  6. Step 6: Final answer
    x = 468,859.93

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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.