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Finding the Fourth Proportional to 630,538.26, 870,135.55 and 344,063.13

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Solution

The fourth proportional to 630,538.26, 870,135.55 and 344,063.13 is: 474,803.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,538.26 : 870,135.55 = 344,063.13 : x
  2. Step 2: Convert to fraction form
    630,538.26/870,135.55 = 344,063.13/x
  3. Step 3: Cross multiply
    630,538.26x = 870,135.55 × 344,063.13
  4. Step 4: Simplify right side
    630,538.26x = 299,381,560,857.27
  5. Step 5: Solve for x
    x = 299,381,560,857.27/630,538.26
  6. Step 6: Final answer
    x = 474,803.16

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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.