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Finding the Fourth Proportional to 631,414.95, 871,383.74 and 359,488.23

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Solution

The fourth proportional to 631,414.95, 871,383.74 and 359,488.23 is: 496,111.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,414.95 : 871,383.74 = 359,488.23 : x
  2. Step 2: Convert to fraction form
    631,414.95/871,383.74 = 359,488.23/x
  3. Step 3: Cross multiply
    631,414.95x = 871,383.74 × 359,488.23
  4. Step 4: Simplify right side
    631,414.95x = 313,252,196,545.94
  5. Step 5: Solve for x
    x = 313,252,196,545.94/631,414.95
  6. Step 6: Final answer
    x = 496,111.47

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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.