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Finding the Fourth Proportional to 630,620.66, 870,274.86 and 344,159.22

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Solution

The fourth proportional to 630,620.66, 870,274.86 and 344,159.22 is: 474,949.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,620.66 : 870,274.86 = 344,159.22 : x
  2. Step 2: Convert to fraction form
    630,620.66/870,274.86 = 344,159.22/x
  3. Step 3: Cross multiply
    630,620.66x = 870,274.86 × 344,159.22
  4. Step 4: Simplify right side
    630,620.66x = 299,513,117,003.21
  5. Step 5: Solve for x
    x = 299,513,117,003.21/630,620.66
  6. Step 6: Final answer
    x = 474,949.74

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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.