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Finding the Fourth Proportional to 710,588.70, 980,570.61 and 388,234.62

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Solution

The fourth proportional to 710,588.70, 980,570.61 and 388,234.62 is: 535,740.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,588.70 : 980,570.61 = 388,234.62 : x
  2. Step 2: Convert to fraction form
    710,588.70/980,570.61 = 388,234.62/x
  3. Step 3: Cross multiply
    710,588.70x = 980,570.61 × 388,234.62
  4. Step 4: Simplify right side
    710,588.70x = 380,691,458,156.52
  5. Step 5: Solve for x
    x = 380,691,458,156.52/710,588.70
  6. Step 6: Final answer
    x = 535,740.94

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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.