Home / 621,630.60-933,137.10-385,240.20

Finding the Fourth Proportional to 621,630.60, 933,137.10 and 385,240.20

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Solution

The fourth proportional to 621,630.60, 933,137.10 and 385,240.20 is: 578,288.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,630.60 : 933,137.10 = 385,240.20 : x
  2. Step 2: Convert to fraction form
    621,630.60/933,137.10 = 385,240.20/x
  3. Step 3: Cross multiply
    621,630.60x = 933,137.10 × 385,240.20
  4. Step 4: Simplify right side
    621,630.60x = 359,481,923,031.42
  5. Step 5: Solve for x
    x = 359,481,923,031.42/621,630.60
  6. Step 6: Final answer
    x = 578,288.65

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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.