Home / 935,870.40-1,291,659.96-528,087.87

Finding the Fourth Proportional to 935,870.40, 1,291,659.96 and 528,087.87

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Solution

The fourth proportional to 935,870.40, 1,291,659.96 and 528,087.87 is: 728,850.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    935,870.40 : 1,291,659.96 = 528,087.87 : x
  2. Step 2: Convert to fraction form
    935,870.40/1,291,659.96 = 528,087.87/x
  3. Step 3: Cross multiply
    935,870.40x = 1,291,659.96 × 528,087.87
  4. Step 4: Simplify right side
    935,870.40x = 682,109,957,040.69
  5. Step 5: Solve for x
    x = 682,109,957,040.69/935,870.40
  6. Step 6: Final answer
    x = 728,850.87

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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.