Home / 831,065.40-1,147,816.21-558,660.89

Finding the Fourth Proportional to 831,065.40, 1,147,816.21 and 558,660.89

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Solution

The fourth proportional to 831,065.40, 1,147,816.21 and 558,660.89 is: 771,587.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,065.40 : 1,147,816.21 = 558,660.89 : x
  2. Step 2: Convert to fraction form
    831,065.40/1,147,816.21 = 558,660.89/x
  3. Step 3: Cross multiply
    831,065.40x = 1,147,816.21 × 558,660.89
  4. Step 4: Simplify right side
    831,065.40x = 641,240,025,435.03
  5. Step 5: Solve for x
    x = 641,240,025,435.03/831,065.40
  6. Step 6: Final answer
    x = 771,587.92

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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.