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Finding the Fourth Proportional to 555,641.24, 766,783.25 and 313,923.72

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Solution

The fourth proportional to 555,641.24, 766,783.25 and 313,923.72 is: 433,213.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,641.24 : 766,783.25 = 313,923.72 : x
  2. Step 2: Convert to fraction form
    555,641.24/766,783.25 = 313,923.72/x
  3. Step 3: Cross multiply
    555,641.24x = 766,783.25 × 313,923.72
  4. Step 4: Simplify right side
    555,641.24x = 240,711,448,704.07
  5. Step 5: Solve for x
    x = 240,711,448,704.07/555,641.24
  6. Step 6: Final answer
    x = 433,213.80

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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.