Home / 457,345.41-631,356.05-321,495.81

Finding the Fourth Proportional to 457,345.41, 631,356.05 and 321,495.81

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Solution

The fourth proportional to 457,345.41, 631,356.05 and 321,495.81 is: 443,818.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,345.41 : 631,356.05 = 321,495.81 : x
  2. Step 2: Convert to fraction form
    457,345.41/631,356.05 = 321,495.81/x
  3. Step 3: Cross multiply
    457,345.41x = 631,356.05 × 321,495.81
  4. Step 4: Simplify right side
    457,345.41x = 202,978,323,129.31
  5. Step 5: Solve for x
    x = 202,978,323,129.31/457,345.41
  6. Step 6: Final answer
    x = 443,818.44

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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.