Home / 811,538.80-1,214,975.40-496,610.80

Finding the Fourth Proportional to 811,538.80, 1,214,975.40 and 496,610.80

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Solution

The fourth proportional to 811,538.80, 1,214,975.40 and 496,610.80 is: 743,488.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,538.80 : 1,214,975.40 = 496,610.80 : x
  2. Step 2: Convert to fraction form
    811,538.80/1,214,975.40 = 496,610.80/x
  3. Step 3: Cross multiply
    811,538.80x = 1,214,975.40 × 496,610.80
  4. Step 4: Simplify right side
    811,538.80x = 603,369,905,374.32
  5. Step 5: Solve for x
    x = 603,369,905,374.32/811,538.80
  6. Step 6: Final answer
    x = 743,488.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.