Home / 790,142.20-1,090,388.64-427,558.12

Finding the Fourth Proportional to 790,142.20, 1,090,388.64 and 427,558.12

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Solution

The fourth proportional to 790,142.20, 1,090,388.64 and 427,558.12 is: 590,026.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,142.20 : 1,090,388.64 = 427,558.12 : x
  2. Step 2: Convert to fraction form
    790,142.20/1,090,388.64 = 427,558.12/x
  3. Step 3: Cross multiply
    790,142.20x = 1,090,388.64 × 427,558.12
  4. Step 4: Simplify right side
    790,142.20x = 466,204,516,987.76
  5. Step 5: Solve for x
    x = 466,204,516,987.76/790,142.20
  6. Step 6: Final answer
    x = 590,026.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.