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Finding the Fourth Proportional to 610,671.78, 842,727.78 and 356,072.18

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Solution

The fourth proportional to 610,671.78, 842,727.78 and 356,072.18 is: 491,380.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,671.78 : 842,727.78 = 356,072.18 : x
  2. Step 2: Convert to fraction form
    610,671.78/842,727.78 = 356,072.18/x
  3. Step 3: Cross multiply
    610,671.78x = 842,727.78 × 356,072.18
  4. Step 4: Simplify right side
    610,671.78x = 300,071,913,557.52
  5. Step 5: Solve for x
    x = 300,071,913,557.52/610,671.78
  6. Step 6: Final answer
    x = 491,380.02

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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.