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Finding the Fourth Proportional to 634,664.16, 952,245.18 and 279,429

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Solution

The fourth proportional to 634,664.16, 952,245.18 and 279,429 is: 419,253.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,664.16 : 952,245.18 = 279,429 : x
  2. Step 2: Convert to fraction form
    634,664.16/952,245.18 = 279,429/x
  3. Step 3: Cross multiply
    634,664.16x = 952,245.18 × 279,429
  4. Step 4: Simplify right side
    634,664.16x = 266,084,918,402.22
  5. Step 5: Solve for x
    x = 266,084,918,402.22/634,664.16
  6. Step 6: Final answer
    x = 419,253.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.