Home / 850,685.20-1,275,720.60-429,821.20

Finding the Fourth Proportional to 850,685.20, 1,275,720.60 and 429,821.20

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Solution

The fourth proportional to 850,685.20, 1,275,720.60 and 429,821.20 is: 644,576.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    850,685.20 : 1,275,720.60 = 429,821.20 : x
  2. Step 2: Convert to fraction form
    850,685.20/1,275,720.60 = 429,821.20/x
  3. Step 3: Cross multiply
    850,685.20x = 1,275,720.60 × 429,821.20
  4. Step 4: Simplify right side
    850,685.20x = 548,331,759,156.72
  5. Step 5: Solve for x
    x = 548,331,759,156.72/850,685.20
  6. Step 6: Final answer
    x = 644,576.58

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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.