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Finding the Fourth Proportional to 550,665.20, 759,905.80 and 308,943.44

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Solution

The fourth proportional to 550,665.20, 759,905.80 and 308,943.44 is: 426,335.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,665.20 : 759,905.80 = 308,943.44 : x
  2. Step 2: Convert to fraction form
    550,665.20/759,905.80 = 308,943.44/x
  3. Step 3: Cross multiply
    550,665.20x = 759,905.80 × 308,943.44
  4. Step 4: Simplify right side
    550,665.20x = 234,767,911,927.95
  5. Step 5: Solve for x
    x = 234,767,911,927.95/550,665.20
  6. Step 6: Final answer
    x = 426,335.12

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1.5x scale

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.