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Finding the Fourth Proportional to 710,752.72, 980,840.44 and 388,466.64

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Solution

The fourth proportional to 710,752.72, 980,840.44 and 388,466.64 is: 536,084.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,752.72 : 980,840.44 = 388,466.64 : x
  2. Step 2: Convert to fraction form
    710,752.72/980,840.44 = 388,466.64/x
  3. Step 3: Cross multiply
    710,752.72x = 980,840.44 × 388,466.64
  4. Step 4: Simplify right side
    710,752.72x = 381,023,790,102.92
  5. Step 5: Solve for x
    x = 381,023,790,102.92/710,752.72
  6. Step 6: Final answer
    x = 536,084.88

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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.