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Finding the Fourth Proportional to 630,591.34, 870,234.44 and 344,129.88

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Solution

The fourth proportional to 630,591.34, 870,234.44 and 344,129.88 is: 474,909.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,591.34 : 870,234.44 = 344,129.88 : x
  2. Step 2: Convert to fraction form
    630,591.34/870,234.44 = 344,129.88/x
  3. Step 3: Cross multiply
    630,591.34x = 870,234.44 × 344,129.88
  4. Step 4: Simplify right side
    630,591.34x = 299,473,673,409.07
  5. Step 5: Solve for x
    x = 299,473,673,409.07/630,591.34
  6. Step 6: Final answer
    x = 474,909.27

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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.