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Finding the Fourth Proportional to 630,578.60, 870,216.93 and 344,117.15

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Solution

The fourth proportional to 630,578.60, 870,216.93 and 344,117.15 is: 474,891.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,578.60 : 870,216.93 = 344,117.15 : x
  2. Step 2: Convert to fraction form
    630,578.60/870,216.93 = 344,117.15/x
  3. Step 3: Cross multiply
    630,578.60x = 870,216.93 × 344,117.15
  4. Step 4: Simplify right side
    630,578.60x = 299,456,569,833.35
  5. Step 5: Solve for x
    x = 299,456,569,833.35/630,578.60
  6. Step 6: Final answer
    x = 474,891.74

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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.