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Finding the Fourth Proportional to 555,459.20, 766,529.88 and 300,804.56

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Solution

The fourth proportional to 555,459.20, 766,529.88 and 300,804.56 is: 415,108.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,459.20 : 766,529.88 = 300,804.56 : x
  2. Step 2: Convert to fraction form
    555,459.20/766,529.88 = 300,804.56/x
  3. Step 3: Cross multiply
    555,459.20x = 766,529.88 × 300,804.56
  4. Step 4: Simplify right side
    555,459.20x = 230,575,683,280.25
  5. Step 5: Solve for x
    x = 230,575,683,280.25/555,459.20
  6. Step 6: Final answer
    x = 415,108.23

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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.