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Finding the Fourth Proportional to 647,999.90, 971,539.05 and 248,486.30

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Solution

The fourth proportional to 647,999.90, 971,539.05 and 248,486.30 is: 372,552.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,999.90 : 971,539.05 = 248,486.30 : x
  2. Step 2: Convert to fraction form
    647,999.90/971,539.05 = 248,486.30/x
  3. Step 3: Cross multiply
    647,999.90x = 971,539.05 × 248,486.30
  4. Step 4: Simplify right side
    647,999.90x = 241,414,143,840.02
  5. Step 5: Solve for x
    x = 241,414,143,840.02/647,999.90
  6. Step 6: Final answer
    x = 372,552.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.