Home / 821,669.52-1,231,658.64-400,424.16

Finding the Fourth Proportional to 821,669.52, 1,231,658.64 and 400,424.16

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Solution

The fourth proportional to 821,669.52, 1,231,658.64 and 400,424.16 is: 600,224.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,669.52 : 1,231,658.64 = 400,424.16 : x
  2. Step 2: Convert to fraction form
    821,669.52/1,231,658.64 = 400,424.16/x
  3. Step 3: Cross multiply
    821,669.52x = 1,231,658.64 × 400,424.16
  4. Step 4: Simplify right side
    821,669.52x = 493,185,876,328.74
  5. Step 5: Solve for x
    x = 493,185,876,328.74/821,669.52
  6. Step 6: Final answer
    x = 600,224.13

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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.