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Finding the Fourth Proportional to 630,591.56, 870,234.86 and 344,130.12

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Solution

The fourth proportional to 630,591.56, 870,234.86 and 344,130.12 is: 474,909.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,591.56 : 870,234.86 = 344,130.12 : x
  2. Step 2: Convert to fraction form
    630,591.56/870,234.86 = 344,130.12/x
  3. Step 3: Cross multiply
    630,591.56x = 870,234.86 × 344,130.12
  4. Step 4: Simplify right side
    630,591.56x = 299,474,026,799.98
  5. Step 5: Solve for x
    x = 299,474,026,799.98/630,591.56
  6. Step 6: Final answer
    x = 474,909.67

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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.