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Finding the Fourth Proportional to 553,915.74, 764,404.11 and 299,266.86

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Solution

The fourth proportional to 553,915.74, 764,404.11 and 299,266.86 is: 412,988.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,915.74 : 764,404.11 = 299,266.86 : x
  2. Step 2: Convert to fraction form
    553,915.74/764,404.11 = 299,266.86/x
  3. Step 3: Cross multiply
    553,915.74x = 764,404.11 × 299,266.86
  4. Step 4: Simplify right side
    553,915.74x = 228,760,817,770.80
  5. Step 5: Solve for x
    x = 228,760,817,770.80/553,915.74
  6. Step 6: Final answer
    x = 412,988.48

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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.