Home / 859,637.70-1,289,456.55-260,569.20

Finding the Fourth Proportional to 859,637.70, 1,289,456.55 and 260,569.20

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Solution

The fourth proportional to 859,637.70, 1,289,456.55 and 260,569.20 is: 390,853.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,637.70 : 1,289,456.55 = 260,569.20 : x
  2. Step 2: Convert to fraction form
    859,637.70/1,289,456.55 = 260,569.20/x
  3. Step 3: Cross multiply
    859,637.70x = 1,289,456.55 × 260,569.20
  4. Step 4: Simplify right side
    859,637.70x = 335,992,661,668.26
  5. Step 5: Solve for x
    x = 335,992,661,668.26/859,637.70
  6. Step 6: Final answer
    x = 390,853.80

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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.