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Finding the Fourth Proportional to 710,855.48, 980,980.44 and 388,566.84

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Solution

The fourth proportional to 710,855.48, 980,980.44 and 388,566.84 is: 536,222.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,855.48 : 980,980.44 = 388,566.84 : x
  2. Step 2: Convert to fraction form
    710,855.48/980,980.44 = 388,566.84/x
  3. Step 3: Cross multiply
    710,855.48x = 980,980.44 × 388,566.84
  4. Step 4: Simplify right side
    710,855.48x = 381,176,469,672.61
  5. Step 5: Solve for x
    x = 381,176,469,672.61/710,855.48
  6. Step 6: Final answer
    x = 536,222.17

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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.