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Finding the Fourth Proportional to 710,532.41, 980,505.81 and 388,253.66

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Solution

The fourth proportional to 710,532.41, 980,505.81 and 388,253.66 is: 535,774.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,532.41 : 980,505.81 = 388,253.66 : x
  2. Step 2: Convert to fraction form
    710,532.41/980,505.81 = 388,253.66/x
  3. Step 3: Cross multiply
    710,532.41x = 980,505.81 × 388,253.66
  4. Step 4: Simplify right side
    710,532.41x = 380,684,964,481.24
  5. Step 5: Solve for x
    x = 380,684,964,481.24/710,532.41
  6. Step 6: Final answer
    x = 535,774.25

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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.