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Finding the Fourth Proportional to 630,957.87, 870,717.38 and 344,477.97

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Solution

The fourth proportional to 630,957.87, 870,717.38 and 344,477.97 is: 475,377.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,957.87 : 870,717.38 = 344,477.97 : x
  2. Step 2: Convert to fraction form
    630,957.87/870,717.38 = 344,477.97/x
  3. Step 3: Cross multiply
    630,957.87x = 870,717.38 × 344,477.97
  4. Step 4: Simplify right side
    630,957.87x = 299,942,953,783.73
  5. Step 5: Solve for x
    x = 299,942,953,783.73/630,957.87
  6. Step 6: Final answer
    x = 475,377.15

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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.