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Finding the Fourth Proportional to 677,081, 934,371.78 and 375,275

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Solution

The fourth proportional to 677,081, 934,371.78 and 375,275 is: 517,879.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,081 : 934,371.78 = 375,275 : x
  2. Step 2: Convert to fraction form
    677,081/934,371.78 = 375,275/x
  3. Step 3: Cross multiply
    677,081x = 934,371.78 × 375,275
  4. Step 4: Simplify right side
    677,081x = 350,646,369,739.50
  5. Step 5: Solve for x
    x = 350,646,369,739.50/677,081
  6. Step 6: Final answer
    x = 517,879.50

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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.