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Finding the Fourth Proportional to 555,261.81, 766,261.53 and 300,612.93

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Solution

The fourth proportional to 555,261.81, 766,261.53 and 300,612.93 is: 414,845.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,261.81 : 766,261.53 = 300,612.93 : x
  2. Step 2: Convert to fraction form
    555,261.81/766,261.53 = 300,612.93/x
  3. Step 3: Cross multiply
    555,261.81x = 766,261.53 × 300,612.93
  4. Step 4: Simplify right side
    555,261.81x = 230,348,123,679.58
  5. Step 5: Solve for x
    x = 230,348,123,679.58/555,261.81
  6. Step 6: Final answer
    x = 414,845.97

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1.5x scale

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.