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Finding the Fourth Proportional to 691,345, 954,056.64 and 373,393

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Solution

The fourth proportional to 691,345, 954,056.64 and 373,393 is: 515,282.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,345 : 954,056.64 = 373,393 : x
  2. Step 2: Convert to fraction form
    691,345/954,056.64 = 373,393/x
  3. Step 3: Cross multiply
    691,345x = 954,056.64 × 373,393
  4. Step 4: Simplify right side
    691,345x = 356,238,070,979.52
  5. Step 5: Solve for x
    x = 356,238,070,979.52/691,345
  6. Step 6: Final answer
    x = 515,282.63

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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.