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Finding the Fourth Proportional to 630,818.48, 870,529.14 and 344,338.49

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Solution

The fourth proportional to 630,818.48, 870,529.14 and 344,338.49 is: 475,186.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,818.48 : 870,529.14 = 344,338.49 : x
  2. Step 2: Convert to fraction form
    630,818.48/870,529.14 = 344,338.49/x
  3. Step 3: Cross multiply
    630,818.48x = 870,529.14 × 344,338.49
  4. Step 4: Simplify right side
    630,818.48x = 299,756,691,744.92
  5. Step 5: Solve for x
    x = 299,756,691,744.92/630,818.48
  6. Step 6: Final answer
    x = 475,186.92

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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.