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Finding the Fourth Proportional to 424,893.80, 586,300.20 and 287,372.54

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Solution

The fourth proportional to 424,893.80, 586,300.20 and 287,372.54 is: 396,538.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,893.80 : 586,300.20 = 287,372.54 : x
  2. Step 2: Convert to fraction form
    424,893.80/586,300.20 = 287,372.54/x
  3. Step 3: Cross multiply
    424,893.80x = 586,300.20 × 287,372.54
  4. Step 4: Simplify right side
    424,893.80x = 168,486,577,676.51
  5. Step 5: Solve for x
    x = 168,486,577,676.51/424,893.80
  6. Step 6: Final answer
    x = 396,538.09

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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.