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Finding the Fourth Proportional to 630,942.15, 870,659.62 and 344,461.62

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Solution

The fourth proportional to 630,942.15, 870,659.62 and 344,461.62 is: 475,334.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,942.15 : 870,659.62 = 344,461.62 : x
  2. Step 2: Convert to fraction form
    630,942.15/870,659.62 = 344,461.62/x
  3. Step 3: Cross multiply
    630,942.15x = 870,659.62 × 344,461.62
  4. Step 4: Simplify right side
    630,942.15x = 299,908,823,173.78
  5. Step 5: Solve for x
    x = 299,908,823,173.78/630,942.15
  6. Step 6: Final answer
    x = 475,334.90

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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.