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Finding the Fourth Proportional to 630,951.21, 870,812.64 and 401,269.04

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Solution

The fourth proportional to 630,951.21, 870,812.64 and 401,269.04 is: 553,814.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,951.21 : 870,812.64 = 401,269.04 : x
  2. Step 2: Convert to fraction form
    630,951.21/870,812.64 = 401,269.04/x
  3. Step 3: Cross multiply
    630,951.21x = 870,812.64 × 401,269.04
  4. Step 4: Simplify right side
    630,951.21x = 349,430,147,718.60
  5. Step 5: Solve for x
    x = 349,430,147,718.60/630,951.21
  6. Step 6: Final answer
    x = 553,814.85

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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.