Home / 812,392.60-1,218,816.69-326,416.00

Finding the Fourth Proportional to 812,392.60, 1,218,816.69 and 326,416.00

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Solution

The fourth proportional to 812,392.60, 1,218,816.69 and 326,416.00 is: 489,715.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,392.60 : 1,218,816.69 = 326,416.00 : x
  2. Step 2: Convert to fraction form
    812,392.60/1,218,816.69 = 326,416.00/x
  3. Step 3: Cross multiply
    812,392.60x = 1,218,816.69 × 326,416.00
  4. Step 4: Simplify right side
    812,392.60x = 397,841,265,166.48
  5. Step 5: Solve for x
    x = 397,841,265,166.48/812,392.60
  6. Step 6: Final answer
    x = 489,715.52

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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.