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Finding the Fourth Proportional to 630,959.64, 870,719.79 and 344,479.71

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Solution

The fourth proportional to 630,959.64, 870,719.79 and 344,479.71 is: 475,379.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,959.64 : 870,719.79 = 344,479.71 : x
  2. Step 2: Convert to fraction form
    630,959.64/870,719.79 = 344,479.71/x
  3. Step 3: Cross multiply
    630,959.64x = 870,719.79 × 344,479.71
  4. Step 4: Simplify right side
    630,959.64x = 299,945,300,750.46
  5. Step 5: Solve for x
    x = 299,945,300,750.46/630,959.64
  6. Step 6: Final answer
    x = 475,379.54

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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.