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Finding the Fourth Proportional to 710,609.80, 980,654.36 and 388,333.48

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Solution

The fourth proportional to 710,609.80, 980,654.36 and 388,333.48 is: 535,907.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,609.80 : 980,654.36 = 388,333.48 : x
  2. Step 2: Convert to fraction form
    710,609.80/980,654.36 = 388,333.48/x
  3. Step 3: Cross multiply
    710,609.80x = 980,654.36 × 388,333.48
  4. Step 4: Simplify right side
    710,609.80x = 380,820,920,295.97
  5. Step 5: Solve for x
    x = 380,820,920,295.97/710,609.80
  6. Step 6: Final answer
    x = 535,907.22

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1.5x scale

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.