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Finding the Fourth Proportional to 630,589.34, 870,231.68 and 344,127.88

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Solution

The fourth proportional to 630,589.34, 870,231.68 and 344,127.88 is: 474,906.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,589.34 : 870,231.68 = 344,127.88 : x
  2. Step 2: Convert to fraction form
    630,589.34/870,231.68 = 344,127.88/x
  3. Step 3: Cross multiply
    630,589.34x = 870,231.68 × 344,127.88
  4. Step 4: Simplify right side
    630,589.34x = 299,470,983,804.87
  5. Step 5: Solve for x
    x = 299,470,983,804.87/630,589.34
  6. Step 6: Final answer
    x = 474,906.51

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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.