Home / 472,743.96-653,098.08-309,787.72

Finding the Fourth Proportional to 472,743.96, 653,098.08 and 309,787.72

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Solution

The fourth proportional to 472,743.96, 653,098.08 and 309,787.72 is: 427,973.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,743.96 : 653,098.08 = 309,787.72 : x
  2. Step 2: Convert to fraction form
    472,743.96/653,098.08 = 309,787.72/x
  3. Step 3: Cross multiply
    472,743.96x = 653,098.08 × 309,787.72
  4. Step 4: Simplify right side
    472,743.96x = 202,321,765,139.58
  5. Step 5: Solve for x
    x = 202,321,765,139.58/472,743.96
  6. Step 6: Final answer
    x = 427,973.24

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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.