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Finding the Fourth Proportional to 630,954.60, 870,817.29 and 401,272.41

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Solution

The fourth proportional to 630,954.60, 870,817.29 and 401,272.41 is: 553,819.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,954.60 : 870,817.29 = 401,272.41 : x
  2. Step 2: Convert to fraction form
    630,954.60/870,817.29 = 401,272.41/x
  3. Step 3: Cross multiply
    630,954.60x = 870,817.29 × 401,272.41
  4. Step 4: Simplify right side
    630,954.60x = 349,434,952,627.97
  5. Step 5: Solve for x
    x = 349,434,952,627.97/630,954.60
  6. Step 6: Final answer
    x = 553,819.49

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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.