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Finding the Fourth Proportional to 518,729.06, 716,436.60 and 348,667.94

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Solution

The fourth proportional to 518,729.06, 716,436.60 and 348,667.94 is: 481,558.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,729.06 : 716,436.60 = 348,667.94 : x
  2. Step 2: Convert to fraction form
    518,729.06/716,436.60 = 348,667.94/x
  3. Step 3: Cross multiply
    518,729.06x = 716,436.60 × 348,667.94
  4. Step 4: Simplify right side
    518,729.06x = 249,798,473,946.19
  5. Step 5: Solve for x
    x = 249,798,473,946.19/518,729.06
  6. Step 6: Final answer
    x = 481,558.66

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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.