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Finding the Fourth Proportional to 630,959.37, 870,719.45 and 344,479.47

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Solution

The fourth proportional to 630,959.37, 870,719.45 and 344,479.47 is: 475,379.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,959.37 : 870,719.45 = 344,479.47 : x
  2. Step 2: Convert to fraction form
    630,959.37/870,719.45 = 344,479.47/x
  3. Step 3: Cross multiply
    630,959.37x = 870,719.45 × 344,479.47
  4. Step 4: Simplify right side
    630,959.37x = 299,944,972,932.29
  5. Step 5: Solve for x
    x = 299,944,972,932.29/630,959.37
  6. Step 6: Final answer
    x = 475,379.22

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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.