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Finding the Fourth Proportional to 710,474.16, 980,468.46 and 388,204.17

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Solution

The fourth proportional to 710,474.16, 980,468.46 and 388,204.17 is: 535,729.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,474.16 : 980,468.46 = 388,204.17 : x
  2. Step 2: Convert to fraction form
    710,474.16/980,468.46 = 388,204.17/x
  3. Step 3: Cross multiply
    710,474.16x = 980,468.46 × 388,204.17
  4. Step 4: Simplify right side
    710,474.16x = 380,621,944,725.48
  5. Step 5: Solve for x
    x = 380,621,944,725.48/710,474.16
  6. Step 6: Final answer
    x = 535,729.47

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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.