Home / 812,840.47-1,219,638.98-363,865.09

Finding the Fourth Proportional to 812,840.47, 1,219,638.98 and 363,865.09

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Solution

The fourth proportional to 812,840.47, 1,219,638.98 and 363,865.09 is: 545,966.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,840.47 : 1,219,638.98 = 363,865.09 : x
  2. Step 2: Convert to fraction form
    812,840.47/1,219,638.98 = 363,865.09/x
  3. Step 3: Cross multiply
    812,840.47x = 1,219,638.98 × 363,865.09
  4. Step 4: Simplify right side
    812,840.47x = 443,784,044,454.03
  5. Step 5: Solve for x
    x = 443,784,044,454.03/812,840.47
  6. Step 6: Final answer
    x = 545,966.97

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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.