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Finding the Fourth Proportional to 630,954.21, 870,816.78 and 401,272.02

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Solution

The fourth proportional to 630,954.21, 870,816.78 and 401,272.02 is: 553,818.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,954.21 : 870,816.78 = 401,272.02 : x
  2. Step 2: Convert to fraction form
    630,954.21/870,816.78 = 401,272.02/x
  3. Step 3: Cross multiply
    630,954.21x = 870,816.78 × 401,272.02
  4. Step 4: Simplify right side
    630,954.21x = 349,434,408,360.50
  5. Step 5: Solve for x
    x = 349,434,408,360.50/630,954.21
  6. Step 6: Final answer
    x = 553,818.97

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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.