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Finding the Fourth Proportional to 492,004.80, 679,060.80 and 288,100.80

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Solution

The fourth proportional to 492,004.80, 679,060.80 and 288,100.80 is: 397,634.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,004.80 : 679,060.80 = 288,100.80 : x
  2. Step 2: Convert to fraction form
    492,004.80/679,060.80 = 288,100.80/x
  3. Step 3: Cross multiply
    492,004.80x = 679,060.80 × 288,100.80
  4. Step 4: Simplify right side
    492,004.80x = 195,637,959,728.64
  5. Step 5: Solve for x
    x = 195,637,959,728.64/492,004.80
  6. Step 6: Final answer
    x = 397,634.25

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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.