Home / 430,086.20-644,546.10-287,526.20

Finding the Fourth Proportional to 430,086.20, 644,546.10 and 287,526.20

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Solution

The fourth proportional to 430,086.20, 644,546.10 and 287,526.20 is: 430,899.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,086.20 : 644,546.10 = 287,526.20 : x
  2. Step 2: Convert to fraction form
    430,086.20/644,546.10 = 287,526.20/x
  3. Step 3: Cross multiply
    430,086.20x = 644,546.10 × 287,526.20
  4. Step 4: Simplify right side
    430,086.20x = 185,323,890,857.82
  5. Step 5: Solve for x
    x = 185,323,890,857.82/430,086.20
  6. Step 6: Final answer
    x = 430,899.41

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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.