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Finding the Fourth Proportional to 781,770.88, 1,078,866.71 and 432,915.22

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Solution

The fourth proportional to 781,770.88, 1,078,866.71 and 432,915.22 is: 597,435.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,770.88 : 1,078,866.71 = 432,915.22 : x
  2. Step 2: Convert to fraction form
    781,770.88/1,078,866.71 = 432,915.22/x
  3. Step 3: Cross multiply
    781,770.88x = 1,078,866.71 × 432,915.22
  4. Step 4: Simplify right side
    781,770.88x = 467,057,819,110.33
  5. Step 5: Solve for x
    x = 467,057,819,110.33/781,770.88
  6. Step 6: Final answer
    x = 597,435.68

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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.