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Finding the Fourth Proportional to 561,632.68, 775,053.48 and 306,983.86

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Solution

The fourth proportional to 561,632.68, 775,053.48 and 306,983.86 is: 423,637.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,632.68 : 775,053.48 = 306,983.86 : x
  2. Step 2: Convert to fraction form
    561,632.68/775,053.48 = 306,983.86/x
  3. Step 3: Cross multiply
    561,632.68x = 775,053.48 × 306,983.86
  4. Step 4: Simplify right side
    561,632.68x = 237,928,908,996.83
  5. Step 5: Solve for x
    x = 237,928,908,996.83/561,632.68
  6. Step 6: Final answer
    x = 423,637.94

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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.