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Finding the Fourth Proportional to 630,900.55, 870,655.94 and 344,432.71

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Solution

The fourth proportional to 630,900.55, 870,655.94 and 344,432.71 is: 475,324.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,900.55 : 870,655.94 = 344,432.71 : x
  2. Step 2: Convert to fraction form
    630,900.55/870,655.94 = 344,432.71/x
  3. Step 3: Cross multiply
    630,900.55x = 870,655.94 × 344,432.71
  4. Step 4: Simplify right side
    630,900.55x = 299,882,384,891.80
  5. Step 5: Solve for x
    x = 299,882,384,891.80/630,900.55
  6. Step 6: Final answer
    x = 475,324.34

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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.