Home / 619,618.17-855,618.33-387,443.01

Finding the Fourth Proportional to 619,618.17, 855,618.33 and 387,443.01

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Solution

The fourth proportional to 619,618.17, 855,618.33 and 387,443.01 is: 535,012.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,618.17 : 855,618.33 = 387,443.01 : x
  2. Step 2: Convert to fraction form
    619,618.17/855,618.33 = 387,443.01/x
  3. Step 3: Cross multiply
    619,618.17x = 855,618.33 × 387,443.01
  4. Step 4: Simplify right side
    619,618.17x = 331,503,341,186.37
  5. Step 5: Solve for x
    x = 331,503,341,186.37/619,618.17
  6. Step 6: Final answer
    x = 535,012.30

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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.