Home / 840,145.80-1,260,218.70-829,086.60

Finding the Fourth Proportional to 840,145.80, 1,260,218.70 and 829,086.60

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Solution

The fourth proportional to 840,145.80, 1,260,218.70 and 829,086.60 is: 1,243,629.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,145.80 : 1,260,218.70 = 829,086.60 : x
  2. Step 2: Convert to fraction form
    840,145.80/1,260,218.70 = 829,086.60/x
  3. Step 3: Cross multiply
    840,145.80x = 1,260,218.70 × 829,086.60
  4. Step 4: Simplify right side
    840,145.80x = 1,044,830,437,239.42
  5. Step 5: Solve for x
    x = 1,044,830,437,239.42/840,145.80
  6. Step 6: Final answer
    x = 1,243,629.90

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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.