Home / 931,631.50-1,286,627.34-641,996.16

Finding the Fourth Proportional to 931,631.50, 1,286,627.34 and 641,996.16

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Solution

The fourth proportional to 931,631.50, 1,286,627.34 and 641,996.16 is: 886,627.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,631.50 : 1,286,627.34 = 641,996.16 : x
  2. Step 2: Convert to fraction form
    931,631.50/1,286,627.34 = 641,996.16/x
  3. Step 3: Cross multiply
    931,631.50x = 1,286,627.34 × 641,996.16
  4. Step 4: Simplify right side
    931,631.50x = 826,009,805,197.88
  5. Step 5: Solve for x
    x = 826,009,805,197.88/931,631.50
  6. Step 6: Final answer
    x = 886,627.18

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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.