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Finding the Fourth Proportional to 475,288.51, 708,693.20 and 422,476.56

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Solution

The fourth proportional to 475,288.51, 708,693.20 and 422,476.56 is: 629,946.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,288.51 : 708,693.20 = 422,476.56 : x
  2. Step 2: Convert to fraction form
    475,288.51/708,693.20 = 422,476.56/x
  3. Step 3: Cross multiply
    475,288.51x = 708,693.20 × 422,476.56
  4. Step 4: Simplify right side
    475,288.51x = 299,406,264,703.30
  5. Step 5: Solve for x
    x = 299,406,264,703.30/475,288.51
  6. Step 6: Final answer
    x = 629,946.36

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.