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Finding the Fourth Proportional to 554,036.62, 764,859.62 and 393,275.72

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Solution

The fourth proportional to 554,036.62, 764,859.62 and 393,275.72 is: 542,925.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,036.62 : 764,859.62 = 393,275.72 : x
  2. Step 2: Convert to fraction form
    554,036.62/764,859.62 = 393,275.72/x
  3. Step 3: Cross multiply
    554,036.62x = 764,859.62 × 393,275.72
  4. Step 4: Simplify right side
    554,036.62x = 300,800,717,754.43
  5. Step 5: Solve for x
    x = 300,800,717,754.43/554,036.62
  6. Step 6: Final answer
    x = 542,925.70

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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.