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Finding the Fourth Proportional to 630,729.59, 870,398.06 and 344,244.74

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Solution

The fourth proportional to 630,729.59, 870,398.06 and 344,244.74 is: 475,052.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,729.59 : 870,398.06 = 344,244.74 : x
  2. Step 2: Convert to fraction form
    630,729.59/870,398.06 = 344,244.74/x
  3. Step 3: Cross multiply
    630,729.59x = 870,398.06 × 344,244.74
  4. Step 4: Simplify right side
    630,729.59x = 299,629,947,787.99
  5. Step 5: Solve for x
    x = 299,629,947,787.99/630,729.59
  6. Step 6: Final answer
    x = 475,052.95

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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.