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Finding the Fourth Proportional to 702,276.72, 969,134.96 and 379,979.74

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Solution

The fourth proportional to 702,276.72, 969,134.96 and 379,979.74 is: 524,368.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,276.72 : 969,134.96 = 379,979.74 : x
  2. Step 2: Convert to fraction form
    702,276.72/969,134.96 = 379,979.74/x
  3. Step 3: Cross multiply
    702,276.72x = 969,134.96 × 379,979.74
  4. Step 4: Simplify right side
    702,276.72x = 368,251,652,287.08
  5. Step 5: Solve for x
    x = 368,251,652,287.08/702,276.72
  6. Step 6: Final answer
    x = 524,368.31

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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.