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Finding the Fourth Proportional to 674,648.12, 931,012.22 and 368,724.48

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Solution

The fourth proportional to 674,648.12, 931,012.22 and 368,724.48 is: 508,838.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,648.12 : 931,012.22 = 368,724.48 : x
  2. Step 2: Convert to fraction form
    674,648.12/931,012.22 = 368,724.48/x
  3. Step 3: Cross multiply
    674,648.12x = 931,012.22 × 368,724.48
  4. Step 4: Simplify right side
    674,648.12x = 343,286,994,849.52
  5. Step 5: Solve for x
    x = 343,286,994,849.52/674,648.12
  6. Step 6: Final answer
    x = 508,838.59

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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.