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Finding the Fourth Proportional to 552,853.50, 762,975.99 and 311,158.86

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Solution

The fourth proportional to 552,853.50, 762,975.99 and 311,158.86 is: 429,420.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,853.50 : 762,975.99 = 311,158.86 : x
  2. Step 2: Convert to fraction form
    552,853.50/762,975.99 = 311,158.86/x
  3. Step 3: Cross multiply
    552,853.50x = 762,975.99 × 311,158.86
  4. Step 4: Simplify right side
    552,853.50x = 237,406,739,255.77
  5. Step 5: Solve for x
    x = 237,406,739,255.77/552,853.50
  6. Step 6: Final answer
    x = 429,420.70

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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.