Home / 759,421.80-1,139,132.70-475,986.60

Finding the Fourth Proportional to 759,421.80, 1,139,132.70 and 475,986.60

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Solution

The fourth proportional to 759,421.80, 1,139,132.70 and 475,986.60 is: 713,979.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    759,421.80 : 1,139,132.70 = 475,986.60 : x
  2. Step 2: Convert to fraction form
    759,421.80/1,139,132.70 = 475,986.60/x
  3. Step 3: Cross multiply
    759,421.80x = 1,139,132.70 × 475,986.60
  4. Step 4: Simplify right side
    759,421.80x = 542,211,900,821.82
  5. Step 5: Solve for x
    x = 542,211,900,821.82/759,421.80
  6. Step 6: Final answer
    x = 713,979.90

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Double scale
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Similar ratio
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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.