Home / 642,126.05-886,029.82-384,109.62

Finding the Fourth Proportional to 642,126.05, 886,029.82 and 384,109.62

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Solution

The fourth proportional to 642,126.05, 886,029.82 and 384,109.62 is: 530,008.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,126.05 : 886,029.82 = 384,109.62 : x
  2. Step 2: Convert to fraction form
    642,126.05/886,029.82 = 384,109.62/x
  3. Step 3: Cross multiply
    642,126.05x = 886,029.82 × 384,109.62
  4. Step 4: Simplify right side
    642,126.05x = 340,332,573,038.72
  5. Step 5: Solve for x
    x = 340,332,573,038.72/642,126.05
  6. Step 6: Final answer
    x = 530,008.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.