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Finding the Fourth Proportional to 711,362.07, 981,620.26 and 401,247.52

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Solution

The fourth proportional to 711,362.07, 981,620.26 and 401,247.52 is: 553,688.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,362.07 : 981,620.26 = 401,247.52 : x
  2. Step 2: Convert to fraction form
    711,362.07/981,620.26 = 401,247.52/x
  3. Step 3: Cross multiply
    711,362.07x = 981,620.26 × 401,247.52
  4. Step 4: Simplify right side
    711,362.07x = 393,872,696,406.93
  5. Step 5: Solve for x
    x = 393,872,696,406.93/711,362.07
  6. Step 6: Final answer
    x = 553,688.07

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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.