Home / 457,623.48-630,820.36-321,274.92

Finding the Fourth Proportional to 457,623.48, 630,820.36 and 321,274.92

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Solution

The fourth proportional to 457,623.48, 630,820.36 and 321,274.92 is: 442,867.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,623.48 : 630,820.36 = 321,274.92 : x
  2. Step 2: Convert to fraction form
    457,623.48/630,820.36 = 321,274.92/x
  3. Step 3: Cross multiply
    457,623.48x = 630,820.36 × 321,274.92
  4. Step 4: Simplify right side
    457,623.48x = 202,666,760,693.37
  5. Step 5: Solve for x
    x = 202,666,760,693.37/457,623.48
  6. Step 6: Final answer
    x = 442,867.92

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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.