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Finding the Fourth Proportional to 710,790.03, 980,887.86 and 388,499.94

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Solution

The fourth proportional to 710,790.03, 980,887.86 and 388,499.94 is: 536,128.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,790.03 : 980,887.86 = 388,499.94 : x
  2. Step 2: Convert to fraction form
    710,790.03/980,887.86 = 388,499.94/x
  3. Step 3: Cross multiply
    710,790.03x = 980,887.86 × 388,499.94
  4. Step 4: Simplify right side
    710,790.03x = 381,074,874,756.73
  5. Step 5: Solve for x
    x = 381,074,874,756.73/710,790.03
  6. Step 6: Final answer
    x = 536,128.62

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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.