Home / 1,389,444.30-2,084,166.45-680,856.30

Finding the Fourth Proportional to 1,389,444.30, 2,084,166.45 and 680,856.30

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Solution

The fourth proportional to 1,389,444.30, 2,084,166.45 and 680,856.30 is: 1,021,284.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,444.30 : 2,084,166.45 = 680,856.30 : x
  2. Step 2: Convert to fraction form
    1,389,444.30/2,084,166.45 = 680,856.30/x
  3. Step 3: Cross multiply
    1,389,444.30x = 2,084,166.45 × 680,856.30
  4. Step 4: Simplify right side
    1,389,444.30x = 1,419,017,857,731.14
  5. Step 5: Solve for x
    x = 1,419,017,857,731.14/1,389,444.30
  6. Step 6: Final answer
    x = 1,021,284.45

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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.