Home / 911,165.81-1,366,786.17-312,538.55

Finding the Fourth Proportional to 911,165.81, 1,366,786.17 and 312,538.55

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Solution

The fourth proportional to 911,165.81, 1,366,786.17 and 312,538.55 is: 468,820.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,165.81 : 1,366,786.17 = 312,538.55 : x
  2. Step 2: Convert to fraction form
    911,165.81/1,366,786.17 = 312,538.55/x
  3. Step 3: Cross multiply
    911,165.81x = 1,366,786.17 × 312,538.55
  4. Step 4: Simplify right side
    911,165.81x = 427,173,360,897.92
  5. Step 5: Solve for x
    x = 427,173,360,897.92/911,165.81
  6. Step 6: Final answer
    x = 468,820.67

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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.