Home / 765,743.49-1,148,739.77-260,349.66

Finding the Fourth Proportional to 765,743.49, 1,148,739.77 and 260,349.66

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Solution

The fourth proportional to 765,743.49, 1,148,739.77 and 260,349.66 is: 390,566.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,743.49 : 1,148,739.77 = 260,349.66 : x
  2. Step 2: Convert to fraction form
    765,743.49/1,148,739.77 = 260,349.66/x
  3. Step 3: Cross multiply
    765,743.49x = 1,148,739.77 × 260,349.66
  4. Step 4: Simplify right side
    765,743.49x = 299,074,009,198.85
  5. Step 5: Solve for x
    x = 299,074,009,198.85/765,743.49
  6. Step 6: Final answer
    x = 390,566.83

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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.