Home / 759,487.80-1,139,231.70-310,059.30

Finding the Fourth Proportional to 759,487.80, 1,139,231.70 and 310,059.30

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Solution

The fourth proportional to 759,487.80, 1,139,231.70 and 310,059.30 is: 465,088.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    759,487.80 : 1,139,231.70 = 310,059.30 : x
  2. Step 2: Convert to fraction form
    759,487.80/1,139,231.70 = 310,059.30/x
  3. Step 3: Cross multiply
    759,487.80x = 1,139,231.70 × 310,059.30
  4. Step 4: Simplify right side
    759,487.80x = 353,229,383,439.81
  5. Step 5: Solve for x
    x = 353,229,383,439.81/759,487.80
  6. Step 6: Final answer
    x = 465,088.95

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Double scale
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Similar ratio
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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.