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Finding the Fourth Proportional to 702,259.76, 969,111.56 and 379,962.78

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Solution

The fourth proportional to 702,259.76, 969,111.56 and 379,962.78 is: 524,344.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,259.76 : 969,111.56 = 379,962.78 : x
  2. Step 2: Convert to fraction form
    702,259.76/969,111.56 = 379,962.78/x
  3. Step 3: Cross multiply
    702,259.76x = 969,111.56 × 379,962.78
  4. Step 4: Simplify right side
    702,259.76x = 368,226,322,467.74
  5. Step 5: Solve for x
    x = 368,226,322,467.74/702,259.76
  6. Step 6: Final answer
    x = 524,344.90

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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.