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Finding the Fourth Proportional to 569,307, 785,435.94 and 438,524.28

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Solution

The fourth proportional to 569,307, 785,435.94 and 438,524.28 is: 605,003.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,307 : 785,435.94 = 438,524.28 : x
  2. Step 2: Convert to fraction form
    569,307/785,435.94 = 438,524.28/x
  3. Step 3: Cross multiply
    569,307x = 785,435.94 × 438,524.28
  4. Step 4: Simplify right side
    569,307x = 344,432,730,074.62
  5. Step 5: Solve for x
    x = 344,432,730,074.62/569,307
  6. Step 6: Final answer
    x = 605,003.50

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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.