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Finding the Fourth Proportional to 710,461.33, 980,425.05 and 388,164.49

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Solution

The fourth proportional to 710,461.33, 980,425.05 and 388,164.49 is: 535,660.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,461.33 : 980,425.05 = 388,164.49 : x
  2. Step 2: Convert to fraction form
    710,461.33/980,425.05 = 388,164.49/x
  3. Step 3: Cross multiply
    710,461.33x = 980,425.05 × 388,164.49
  4. Step 4: Simplify right side
    710,461.33x = 380,566,185,609.80
  5. Step 5: Solve for x
    x = 380,566,185,609.80/710,461.33
  6. Step 6: Final answer
    x = 535,660.66

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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.