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Finding the Fourth Proportional to 683,643.15, 943,421.97 and 377,718.57

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Solution

The fourth proportional to 683,643.15, 943,421.97 and 377,718.57 is: 521,248.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,643.15 : 943,421.97 = 377,718.57 : x
  2. Step 2: Convert to fraction form
    683,643.15/943,421.97 = 377,718.57/x
  3. Step 3: Cross multiply
    683,643.15x = 943,421.97 × 377,718.57
  4. Step 4: Simplify right side
    683,643.15x = 356,347,997,414.98
  5. Step 5: Solve for x
    x = 356,347,997,414.98/683,643.15
  6. Step 6: Final answer
    x = 521,248.55

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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.