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Finding the Fourth Proportional to 685,867.95, 946,487.52 and 379,943.42

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Solution

The fourth proportional to 685,867.95, 946,487.52 and 379,943.42 is: 524,316.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,867.95 : 946,487.52 = 379,943.42 : x
  2. Step 2: Convert to fraction form
    685,867.95/946,487.52 = 379,943.42/x
  3. Step 3: Cross multiply
    685,867.95x = 946,487.52 × 379,943.42
  4. Step 4: Simplify right side
    685,867.95x = 359,611,700,603.68
  5. Step 5: Solve for x
    x = 359,611,700,603.68/685,867.95
  6. Step 6: Final answer
    x = 524,316.23

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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.