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Finding the Fourth Proportional to 710,572.44, 980,548.20 and 388,218.36

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Solution

The fourth proportional to 710,572.44, 980,548.20 and 388,218.36 is: 535,718.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,572.44 : 980,548.20 = 388,218.36 : x
  2. Step 2: Convert to fraction form
    710,572.44/980,548.20 = 388,218.36/x
  3. Step 3: Cross multiply
    710,572.44x = 980,548.20 × 388,218.36
  4. Step 4: Simplify right side
    710,572.44x = 380,666,814,104.95
  5. Step 5: Solve for x
    x = 380,666,814,104.95/710,572.44
  6. Step 6: Final answer
    x = 535,718.52

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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.