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Finding the Fourth Proportional to 555,641.49, 766,783.59 and 313,923.97

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Solution

The fourth proportional to 555,641.49, 766,783.59 and 313,923.97 is: 433,214.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,641.49 : 766,783.59 = 313,923.97 : x
  2. Step 2: Convert to fraction form
    555,641.49/766,783.59 = 313,923.97/x
  3. Step 3: Cross multiply
    555,641.49x = 766,783.59 × 313,923.97
  4. Step 4: Simplify right side
    555,641.49x = 240,711,748,703.65
  5. Step 5: Solve for x
    x = 240,711,748,703.65/555,641.49
  6. Step 6: Final answer
    x = 433,214.14

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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.