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Finding the Fourth Proportional to 518,729.94, 716,437.81 and 348,668.82

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Solution

The fourth proportional to 518,729.94, 716,437.81 and 348,668.82 is: 481,559.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,729.94 : 716,437.81 = 348,668.82 : x
  2. Step 2: Convert to fraction form
    518,729.94/716,437.81 = 348,668.82/x
  3. Step 3: Cross multiply
    518,729.94x = 716,437.81 × 348,668.82
  4. Step 4: Simplify right side
    518,729.94x = 249,799,524,072.74
  5. Step 5: Solve for x
    x = 249,799,524,072.74/518,729.94
  6. Step 6: Final answer
    x = 481,559.87

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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.