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Finding the Fourth Proportional to 946,535.64, 1,307,601 and 818,989.80

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Solution

The fourth proportional to 946,535.64, 1,307,601 and 818,989.80 is: 1,131,401.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    946,535.64 : 1,307,601 = 818,989.80 : x
  2. Step 2: Convert to fraction form
    946,535.64/1,307,601 = 818,989.80/x
  3. Step 3: Cross multiply
    946,535.64x = 1,307,601 × 818,989.80
  4. Step 4: Simplify right side
    946,535.64x = 1,070,911,881,469.80
  5. Step 5: Solve for x
    x = 1,070,911,881,469.80/946,535.64
  6. Step 6: Final answer
    x = 1,131,401.54

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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.