Home / 722,106.78-996,538.46-399,816.83

Finding the Fourth Proportional to 722,106.78, 996,538.46 and 399,816.83

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Solution

The fourth proportional to 722,106.78, 996,538.46 and 399,816.83 is: 551,764.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,106.78 : 996,538.46 = 399,816.83 : x
  2. Step 2: Convert to fraction form
    722,106.78/996,538.46 = 399,816.83/x
  3. Step 3: Cross multiply
    722,106.78x = 996,538.46 × 399,816.83
  4. Step 4: Simplify right side
    722,106.78x = 398,432,841,068.51
  5. Step 5: Solve for x
    x = 398,432,841,068.51/722,106.78
  6. Step 6: Final answer
    x = 551,764.44

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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.