Home / 427,427.08-589,791.60-243,689.36

Finding the Fourth Proportional to 427,427.08, 589,791.60 and 243,689.36

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Solution

The fourth proportional to 427,427.08, 589,791.60 and 243,689.36 is: 336,258.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,427.08 : 589,791.60 = 243,689.36 : x
  2. Step 2: Convert to fraction form
    427,427.08/589,791.60 = 243,689.36/x
  3. Step 3: Cross multiply
    427,427.08x = 589,791.60 × 243,689.36
  4. Step 4: Simplify right side
    427,427.08x = 143,725,934,588.42
  5. Step 5: Solve for x
    x = 143,725,934,588.42/427,427.08
  6. Step 6: Final answer
    x = 336,258.38

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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.