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Finding the Fourth Proportional to 630,971.60, 870,736.26 and 344,491.69

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Solution

The fourth proportional to 630,971.60, 870,736.26 and 344,491.69 is: 475,396.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,971.60 : 870,736.26 = 344,491.69 : x
  2. Step 2: Convert to fraction form
    630,971.60/870,736.26 = 344,491.69/x
  3. Step 3: Cross multiply
    630,971.60x = 870,736.26 × 344,491.69
  4. Step 4: Simplify right side
    630,971.60x = 299,961,405,751.68
  5. Step 5: Solve for x
    x = 299,961,405,751.68/630,971.60
  6. Step 6: Final answer
    x = 475,396.05

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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.