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Finding the Fourth Proportional to 706,976, 975,626.88 and 389,024

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Solution

The fourth proportional to 706,976, 975,626.88 and 389,024 is: 536,853.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,976 : 975,626.88 = 389,024 : x
  2. Step 2: Convert to fraction form
    706,976/975,626.88 = 389,024/x
  3. Step 3: Cross multiply
    706,976x = 975,626.88 × 389,024
  4. Step 4: Simplify right side
    706,976x = 379,542,271,365.12
  5. Step 5: Solve for x
    x = 379,542,271,365.12/706,976
  6. Step 6: Final answer
    x = 536,853.12

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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.