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Finding the Fourth Proportional to 521,743.68, 720,597.60 and 351,685.44

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Solution

The fourth proportional to 521,743.68, 720,597.60 and 351,685.44 is: 485,724.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,743.68 : 720,597.60 = 351,685.44 : x
  2. Step 2: Convert to fraction form
    521,743.68/720,597.60 = 351,685.44/x
  3. Step 3: Cross multiply
    521,743.68x = 720,597.60 × 351,685.44
  4. Step 4: Simplify right side
    521,743.68x = 253,423,684,018.94
  5. Step 5: Solve for x
    x = 253,423,684,018.94/521,743.68
  6. Step 6: Final answer
    x = 485,724.49

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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.