Home / 859,280.40-1,286,296.20-670,323.60

Finding the Fourth Proportional to 859,280.40, 1,286,296.20 and 670,323.60

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Solution

The fourth proportional to 859,280.40, 1,286,296.20 and 670,323.60 is: 1,003,438.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,280.40 : 1,286,296.20 = 670,323.60 : x
  2. Step 2: Convert to fraction form
    859,280.40/1,286,296.20 = 670,323.60/x
  3. Step 3: Cross multiply
    859,280.40x = 1,286,296.20 × 670,323.60
  4. Step 4: Simplify right side
    859,280.40x = 862,234,699,450.32
  5. Step 5: Solve for x
    x = 862,234,699,450.32/859,280.40
  6. Step 6: Final answer
    x = 1,003,438.11

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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.