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Finding the Fourth Proportional to 710,344.62, 980,263.26 and 388,046.34

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Solution

The fourth proportional to 710,344.62, 980,263.26 and 388,046.34 is: 535,497.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,344.62 : 980,263.26 = 388,046.34 : x
  2. Step 2: Convert to fraction form
    710,344.62/980,263.26 = 388,046.34/x
  3. Step 3: Cross multiply
    710,344.62x = 980,263.26 × 388,046.34
  4. Step 4: Simplify right side
    710,344.62x = 380,387,570,279.47
  5. Step 5: Solve for x
    x = 380,387,570,279.47/710,344.62
  6. Step 6: Final answer
    x = 535,497.22

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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.