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Finding the Fourth Proportional to 630,882.96, 870,633.41 and 344,405.21

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Solution

The fourth proportional to 630,882.96, 870,633.41 and 344,405.21 is: 475,287.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,882.96 : 870,633.41 = 344,405.21 : x
  2. Step 2: Convert to fraction form
    630,882.96/870,633.41 = 344,405.21/x
  3. Step 3: Cross multiply
    630,882.96x = 870,633.41 × 344,405.21
  4. Step 4: Simplify right side
    630,882.96x = 299,850,676,328.87
  5. Step 5: Solve for x
    x = 299,850,676,328.87/630,882.96
  6. Step 6: Final answer
    x = 475,287.33

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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.