Home / 912,820.20-1,369,230.30-415,156.20

Finding the Fourth Proportional to 912,820.20, 1,369,230.30 and 415,156.20

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Solution

The fourth proportional to 912,820.20, 1,369,230.30 and 415,156.20 is: 622,734.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,820.20 : 1,369,230.30 = 415,156.20 : x
  2. Step 2: Convert to fraction form
    912,820.20/1,369,230.30 = 415,156.20/x
  3. Step 3: Cross multiply
    912,820.20x = 1,369,230.30 × 415,156.20
  4. Step 4: Simplify right side
    912,820.20x = 568,444,448,272.86
  5. Step 5: Solve for x
    x = 568,444,448,272.86/912,820.20
  6. Step 6: Final answer
    x = 622,734.30

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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.