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Finding the Fourth Proportional to 710,468.52, 980,434.96 and 388,171.68

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Solution

The fourth proportional to 710,468.52, 980,434.96 and 388,171.68 is: 535,670.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,468.52 : 980,434.96 = 388,171.68 : x
  2. Step 2: Convert to fraction form
    710,468.52/980,434.96 = 388,171.68/x
  3. Step 3: Cross multiply
    710,468.52x = 980,434.96 × 388,171.68
  4. Step 4: Simplify right side
    710,468.52x = 380,577,085,553.93
  5. Step 5: Solve for x
    x = 380,577,085,553.93/710,468.52
  6. Step 6: Final answer
    x = 535,670.58

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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.