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Finding the Fourth Proportional to 552,841.98, 762,913 and 311,124.42

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Solution

The fourth proportional to 552,841.98, 762,913 and 311,124.42 is: 429,346.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,841.98 : 762,913 = 311,124.42 : x
  2. Step 2: Convert to fraction form
    552,841.98/762,913 = 311,124.42/x
  3. Step 3: Cross multiply
    552,841.98x = 762,913 × 311,124.42
  4. Step 4: Simplify right side
    552,841.98x = 237,360,864,635.46
  5. Step 5: Solve for x
    x = 237,360,864,635.46/552,841.98
  6. Step 6: Final answer
    x = 429,346.67

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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.