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Finding the Fourth Proportional to 710,354.43, 980,273.07 and 388,065.96

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Solution

The fourth proportional to 710,354.43, 980,273.07 and 388,065.96 is: 535,522.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,354.43 : 980,273.07 = 388,065.96 : x
  2. Step 2: Convert to fraction form
    710,354.43/980,273.07 = 388,065.96/x
  3. Step 3: Cross multiply
    710,354.43x = 980,273.07 × 388,065.96
  4. Step 4: Simplify right side
    710,354.43x = 380,410,609,971.70
  5. Step 5: Solve for x
    x = 380,410,609,971.70/710,354.43
  6. Step 6: Final answer
    x = 535,522.26

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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.