Home / 840,151.80-1,260,227.70-279,186.30

Finding the Fourth Proportional to 840,151.80, 1,260,227.70 and 279,186.30

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Solution

The fourth proportional to 840,151.80, 1,260,227.70 and 279,186.30 is: 418,779.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,151.80 : 1,260,227.70 = 279,186.30 : x
  2. Step 2: Convert to fraction form
    840,151.80/1,260,227.70 = 279,186.30/x
  3. Step 3: Cross multiply
    840,151.80x = 1,260,227.70 × 279,186.30
  4. Step 4: Simplify right side
    840,151.80x = 351,838,308,720.51
  5. Step 5: Solve for x
    x = 351,838,308,720.51/840,151.80
  6. Step 6: Final answer
    x = 418,779.45

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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.