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Finding the Fourth Proportional to 662,667.21, 914,217.62 and 383,212.79

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Solution

The fourth proportional to 662,667.21, 914,217.62 and 383,212.79 is: 528,681.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,667.21 : 914,217.62 = 383,212.79 : x
  2. Step 2: Convert to fraction form
    662,667.21/914,217.62 = 383,212.79/x
  3. Step 3: Cross multiply
    662,667.21x = 914,217.62 × 383,212.79
  4. Step 4: Simplify right side
    662,667.21x = 350,339,880,256.27
  5. Step 5: Solve for x
    x = 350,339,880,256.27/662,667.21
  6. Step 6: Final answer
    x = 528,681.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.