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Finding the Fourth Proportional to 710,304.66, 980,208.14 and 388,006.47

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Solution

The fourth proportional to 710,304.66, 980,208.14 and 388,006.47 is: 535,442.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,304.66 : 980,208.14 = 388,006.47 : x
  2. Step 2: Convert to fraction form
    710,304.66/980,208.14 = 388,006.47/x
  3. Step 3: Cross multiply
    710,304.66x = 980,208.14 × 388,006.47
  4. Step 4: Simplify right side
    710,304.66x = 380,327,098,326.63
  5. Step 5: Solve for x
    x = 380,327,098,326.63/710,304.66
  6. Step 6: Final answer
    x = 535,442.21

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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.