Home / 814,657.18-1,221,985.68-253,735.42

Finding the Fourth Proportional to 814,657.18, 1,221,985.68 and 253,735.42

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Solution

The fourth proportional to 814,657.18, 1,221,985.68 and 253,735.42 is: 380,603.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,657.18 : 1,221,985.68 = 253,735.42 : x
  2. Step 2: Convert to fraction form
    814,657.18/1,221,985.68 = 253,735.42/x
  3. Step 3: Cross multiply
    814,657.18x = 1,221,985.68 × 253,735.42
  4. Step 4: Simplify right side
    814,657.18x = 310,061,049,748.79
  5. Step 5: Solve for x
    x = 310,061,049,748.79/814,657.18
  6. Step 6: Final answer
    x = 380,603.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.