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Finding the Fourth Proportional to 710,571.30, 980,576.52 and 388,273.98

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Solution

The fourth proportional to 710,571.30, 980,576.52 and 388,273.98 is: 535,811.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,571.30 : 980,576.52 = 388,273.98 : x
  2. Step 2: Convert to fraction form
    710,571.30/980,576.52 = 388,273.98/x
  3. Step 3: Cross multiply
    710,571.30x = 980,576.52 × 388,273.98
  4. Step 4: Simplify right side
    710,571.30x = 380,732,348,114.95
  5. Step 5: Solve for x
    x = 380,732,348,114.95/710,571.30
  6. Step 6: Final answer
    x = 535,811.60

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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.