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Finding the Fourth Proportional to 710,852.16, 980,989.92 and 388,553.28

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Solution

The fourth proportional to 710,852.16, 980,989.92 and 388,553.28 is: 536,211.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,852.16 : 980,989.92 = 388,553.28 : x
  2. Step 2: Convert to fraction form
    710,852.16/980,989.92 = 388,553.28/x
  3. Step 3: Cross multiply
    710,852.16x = 980,989.92 × 388,553.28
  4. Step 4: Simplify right side
    710,852.16x = 381,166,851,062.94
  5. Step 5: Solve for x
    x = 381,166,851,062.94/710,852.16
  6. Step 6: Final answer
    x = 536,211.15

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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.