Home / 644,406.52-889,604.22-402,823.48

Finding the Fourth Proportional to 644,406.52, 889,604.22 and 402,823.48

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Solution

The fourth proportional to 644,406.52, 889,604.22 and 402,823.48 is: 556,098.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,406.52 : 889,604.22 = 402,823.48 : x
  2. Step 2: Convert to fraction form
    644,406.52/889,604.22 = 402,823.48/x
  3. Step 3: Cross multiply
    644,406.52x = 889,604.22 × 402,823.48
  4. Step 4: Simplify right side
    644,406.52x = 358,353,467,723.09
  5. Step 5: Solve for x
    x = 358,353,467,723.09/644,406.52
  6. Step 6: Final answer
    x = 556,098.45

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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.