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Finding the Fourth Proportional to 551,472.57, 761,015.57 and 306,456.51

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Solution

The fourth proportional to 551,472.57, 761,015.57 and 306,456.51 is: 422,900.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,472.57 : 761,015.57 = 306,456.51 : x
  2. Step 2: Convert to fraction form
    551,472.57/761,015.57 = 306,456.51/x
  3. Step 3: Cross multiply
    551,472.57x = 761,015.57 × 306,456.51
  4. Step 4: Simplify right side
    551,472.57x = 233,218,175,637.86
  5. Step 5: Solve for x
    x = 233,218,175,637.86/551,472.57
  6. Step 6: Final answer
    x = 422,900.77

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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.