Home / 1,328,776.20-1,992,905.10-430,000.20

Finding the Fourth Proportional to 1,328,776.20, 1,992,905.10 and 430,000.20

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Solution

The fourth proportional to 1,328,776.20, 1,992,905.10 and 430,000.20 is: 644,916.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,776.20 : 1,992,905.10 = 430,000.20 : x
  2. Step 2: Convert to fraction form
    1,328,776.20/1,992,905.10 = 430,000.20/x
  3. Step 3: Cross multiply
    1,328,776.20x = 1,992,905.10 × 430,000.20
  4. Step 4: Simplify right side
    1,328,776.20x = 856,949,591,581.02
  5. Step 5: Solve for x
    x = 856,949,591,581.02/1,328,776.20
  6. Step 6: Final answer
    x = 644,916.42

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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.