Home / 681,139.58-939,924.08-405,482.81

Finding the Fourth Proportional to 681,139.58, 939,924.08 and 405,482.81

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Solution

The fourth proportional to 681,139.58, 939,924.08 and 405,482.81 is: 559,537.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,139.58 : 939,924.08 = 405,482.81 : x
  2. Step 2: Convert to fraction form
    681,139.58/939,924.08 = 405,482.81/x
  3. Step 3: Cross multiply
    681,139.58x = 939,924.08 × 405,482.81
  4. Step 4: Simplify right side
    681,139.58x = 381,123,050,418.03
  5. Step 5: Solve for x
    x = 381,123,050,418.03/681,139.58
  6. Step 6: Final answer
    x = 559,537.38

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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.