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Finding the Fourth Proportional to 556,551.20, 768,040.91 and 314,828.62

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Solution

The fourth proportional to 556,551.20, 768,040.91 and 314,828.62 is: 434,463.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,551.20 : 768,040.91 = 314,828.62 : x
  2. Step 2: Convert to fraction form
    556,551.20/768,040.91 = 314,828.62/x
  3. Step 3: Cross multiply
    556,551.20x = 768,040.91 × 314,828.62
  4. Step 4: Simplify right side
    556,551.20x = 241,801,259,798.84
  5. Step 5: Solve for x
    x = 241,801,259,798.84/556,551.20
  6. Step 6: Final answer
    x = 434,463.64

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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.