Home / 931,617.10-1,286,607.54-641,981.76

Finding the Fourth Proportional to 931,617.10, 1,286,607.54 and 641,981.76

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Solution

The fourth proportional to 931,617.10, 1,286,607.54 and 641,981.76 is: 886,607.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,617.10 : 1,286,607.54 = 641,981.76 : x
  2. Step 2: Convert to fraction form
    931,617.10/1,286,607.54 = 641,981.76/x
  3. Step 3: Cross multiply
    931,617.10x = 1,286,607.54 × 641,981.76
  4. Step 4: Simplify right side
    931,617.10x = 825,978,572,958.47
  5. Step 5: Solve for x
    x = 825,978,572,958.47/931,617.10
  6. Step 6: Final answer
    x = 886,607.36

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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.