Home / 1,397,159.40-2,095,739.10-386,279.40

Finding the Fourth Proportional to 1,397,159.40, 2,095,739.10 and 386,279.40

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Solution

The fourth proportional to 1,397,159.40, 2,095,739.10 and 386,279.40 is: 579,419.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,397,159.40 : 2,095,739.10 = 386,279.40 : x
  2. Step 2: Convert to fraction form
    1,397,159.40/2,095,739.10 = 386,279.40/x
  3. Step 3: Cross multiply
    1,397,159.40x = 2,095,739.10 × 386,279.40
  4. Step 4: Simplify right side
    1,397,159.40x = 809,540,842,104.54
  5. Step 5: Solve for x
    x = 809,540,842,104.54/1,397,159.40
  6. Step 6: Final answer
    x = 579,419.10

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Double scale
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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.