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Finding the Fourth Proportional to 710,848.28, 980,997 and 388,580.24

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Solution

The fourth proportional to 710,848.28, 980,997 and 388,580.24 is: 536,255.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,848.28 : 980,997 = 388,580.24 : x
  2. Step 2: Convert to fraction form
    710,848.28/980,997 = 388,580.24/x
  3. Step 3: Cross multiply
    710,848.28x = 980,997 × 388,580.24
  4. Step 4: Simplify right side
    710,848.28x = 381,196,049,699.28
  5. Step 5: Solve for x
    x = 381,196,049,699.28/710,848.28
  6. Step 6: Final answer
    x = 536,255.15

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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.