Home / 643,908.60-964,941.30-446,686.20

Finding the Fourth Proportional to 643,908.60, 964,941.30 and 446,686.20

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Solution

The fourth proportional to 643,908.60, 964,941.30 and 446,686.20 is: 669,389.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,908.60 : 964,941.30 = 446,686.20 : x
  2. Step 2: Convert to fraction form
    643,908.60/964,941.30 = 446,686.20/x
  3. Step 3: Cross multiply
    643,908.60x = 964,941.30 × 446,686.20
  4. Step 4: Simplify right side
    643,908.60x = 431,025,962,520.06
  5. Step 5: Solve for x
    x = 431,025,962,520.06/643,908.60
  6. Step 6: Final answer
    x = 669,389.98

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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.