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Finding the Fourth Proportional to 552,785.98, 762,835.72 and 311,068.42

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Solution

The fourth proportional to 552,785.98, 762,835.72 and 311,068.42 is: 429,269.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,785.98 : 762,835.72 = 311,068.42 : x
  2. Step 2: Convert to fraction form
    552,785.98/762,835.72 = 311,068.42/x
  3. Step 3: Cross multiply
    552,785.98x = 762,835.72 × 311,068.42
  4. Step 4: Simplify right side
    552,785.98x = 237,294,102,139.96
  5. Step 5: Solve for x
    x = 237,294,102,139.96/552,785.98
  6. Step 6: Final answer
    x = 429,269.39

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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.