Home / 644,653.20-889,731.01-372,886.32

Finding the Fourth Proportional to 644,653.20, 889,731.01 and 372,886.32

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Solution

The fourth proportional to 644,653.20, 889,731.01 and 372,886.32 is: 514,646.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,653.20 : 889,731.01 = 372,886.32 : x
  2. Step 2: Convert to fraction form
    644,653.20/889,731.01 = 372,886.32/x
  3. Step 3: Cross multiply
    644,653.20x = 889,731.01 × 372,886.32
  4. Step 4: Simplify right side
    644,653.20x = 331,768,522,108.78
  5. Step 5: Solve for x
    x = 331,768,522,108.78/644,653.20
  6. Step 6: Final answer
    x = 514,646.51

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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.