Home / 1,276,845.40-1,915,268.10-646,989.40

Finding the Fourth Proportional to 1,276,845.40, 1,915,268.10 and 646,989.40

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Solution

The fourth proportional to 1,276,845.40, 1,915,268.10 and 646,989.40 is: 970,484.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,845.40 : 1,915,268.10 = 646,989.40 : x
  2. Step 2: Convert to fraction form
    1,276,845.40/1,915,268.10 = 646,989.40/x
  3. Step 3: Cross multiply
    1,276,845.40x = 1,915,268.10 × 646,989.40
  4. Step 4: Simplify right side
    1,276,845.40x = 1,239,158,158,858.14
  5. Step 5: Solve for x
    x = 1,239,158,158,858.14/1,276,845.40
  6. Step 6: Final answer
    x = 970,484.10

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Double scale
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Similar ratio
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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.