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Finding the Fourth Proportional to 630,703.28, 870,363.72 and 344,221.04

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Solution

The fourth proportional to 630,703.28, 870,363.72 and 344,221.04 is: 475,021.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,703.28 : 870,363.72 = 344,221.04 : x
  2. Step 2: Convert to fraction form
    630,703.28/870,363.72 = 344,221.04/x
  3. Step 3: Cross multiply
    630,703.28x = 870,363.72 × 344,221.04
  4. Step 4: Simplify right side
    630,703.28x = 299,597,504,876.67
  5. Step 5: Solve for x
    x = 299,597,504,876.67/630,703.28
  6. Step 6: Final answer
    x = 475,021.32

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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.