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Finding the Fourth Proportional to 710,512.02, 980,513.48 and 388,222.11

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Solution

The fourth proportional to 710,512.02, 980,513.48 and 388,222.11 is: 535,750.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,512.02 : 980,513.48 = 388,222.11 : x
  2. Step 2: Convert to fraction form
    710,512.02/980,513.48 = 388,222.11/x
  3. Step 3: Cross multiply
    710,512.02x = 980,513.48 × 388,222.11
  4. Step 4: Simplify right side
    710,512.02x = 380,657,013,059.60
  5. Step 5: Solve for x
    x = 380,657,013,059.60/710,512.02
  6. Step 6: Final answer
    x = 535,750.28

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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.