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Finding the Fourth Proportional to 550,509.06, 759,787.65 and 308,889.30

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Solution

The fourth proportional to 550,509.06, 759,787.65 and 308,889.30 is: 426,315.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,509.06 : 759,787.65 = 308,889.30 : x
  2. Step 2: Convert to fraction form
    550,509.06/759,787.65 = 308,889.30/x
  3. Step 3: Cross multiply
    550,509.06x = 759,787.65 × 308,889.30
  4. Step 4: Simplify right side
    550,509.06x = 234,690,275,357.15
  5. Step 5: Solve for x
    x = 234,690,275,357.15/550,509.06
  6. Step 6: Final answer
    x = 426,315.01

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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.