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Finding the Fourth Proportional to 538,943.97, 805,989.40 and 479,322.93

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Solution

The fourth proportional to 538,943.97, 805,989.40 and 479,322.93 is: 716,826.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,943.97 : 805,989.40 = 479,322.93 : x
  2. Step 2: Convert to fraction form
    538,943.97/805,989.40 = 479,322.93/x
  3. Step 3: Cross multiply
    538,943.97x = 805,989.40 × 479,322.93
  4. Step 4: Simplify right side
    538,943.97x = 386,329,199,558.64
  5. Step 5: Solve for x
    x = 386,329,199,558.64/538,943.97
  6. Step 6: Final answer
    x = 716,826.28

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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.