Home / 502,128.72-692,938.80-275,788.80

Finding the Fourth Proportional to 502,128.72, 692,938.80 and 275,788.80

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Solution

The fourth proportional to 502,128.72, 692,938.80 and 275,788.80 is: 380,589.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,128.72 : 692,938.80 = 275,788.80 : x
  2. Step 2: Convert to fraction form
    502,128.72/692,938.80 = 275,788.80/x
  3. Step 3: Cross multiply
    502,128.72x = 692,938.80 × 275,788.80
  4. Step 4: Simplify right side
    502,128.72x = 191,104,760,125.44
  5. Step 5: Solve for x
    x = 191,104,760,125.44/502,128.72
  6. Step 6: Final answer
    x = 380,589.18

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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.