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Finding the Fourth Proportional to 627,412.69, 865,827.22 and 355,532.54

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Solution

The fourth proportional to 627,412.69, 865,827.22 and 355,532.54 is: 490,633.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,412.69 : 865,827.22 = 355,532.54 : x
  2. Step 2: Convert to fraction form
    627,412.69/865,827.22 = 355,532.54/x
  3. Step 3: Cross multiply
    627,412.69x = 865,827.22 × 355,532.54
  4. Step 4: Simplify right side
    627,412.69x = 307,829,750,727.74
  5. Step 5: Solve for x
    x = 307,829,750,727.74/627,412.69
  6. Step 6: Final answer
    x = 490,633.61

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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.