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Finding the Fourth Proportional to 553,576.44, 763,777.44 and 311,774.43

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Solution

The fourth proportional to 553,576.44, 763,777.44 and 311,774.43 is: 430,159.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,576.44 : 763,777.44 = 311,774.43 : x
  2. Step 2: Convert to fraction form
    553,576.44/763,777.44 = 311,774.43/x
  3. Step 3: Cross multiply
    553,576.44x = 763,777.44 × 311,774.43
  4. Step 4: Simplify right side
    553,576.44x = 238,126,276,002.86
  5. Step 5: Solve for x
    x = 238,126,276,002.86/553,576.44
  6. Step 6: Final answer
    x = 430,159.70

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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.