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Finding the Fourth Proportional to 630,769.05, 870,447.42 and 344,293.92

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Solution

The fourth proportional to 630,769.05, 870,447.42 and 344,293.92 is: 475,118.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,769.05 : 870,447.42 = 344,293.92 : x
  2. Step 2: Convert to fraction form
    630,769.05/870,447.42 = 344,293.92/x
  3. Step 3: Cross multiply
    630,769.05x = 870,447.42 × 344,293.92
  4. Step 4: Simplify right side
    630,769.05x = 299,689,754,385.69
  5. Step 5: Solve for x
    x = 299,689,754,385.69/630,769.05
  6. Step 6: Final answer
    x = 475,118.04

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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.