Home / 643,962.45-966,009.81-170,647.80

Finding the Fourth Proportional to 643,962.45, 966,009.81 and 170,647.80

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Solution

The fourth proportional to 643,962.45, 966,009.81 and 170,647.80 is: 255,989.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,962.45 : 966,009.81 = 170,647.80 : x
  2. Step 2: Convert to fraction form
    643,962.45/966,009.81 = 170,647.80/x
  3. Step 3: Cross multiply
    643,962.45x = 966,009.81 × 170,647.80
  4. Step 4: Simplify right side
    643,962.45x = 164,847,445,872.31
  5. Step 5: Solve for x
    x = 164,847,445,872.31/643,962.45
  6. Step 6: Final answer
    x = 255,989.22

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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.