Home / 1,399,712.19-1,930,994.42-855,870.63

Finding the Fourth Proportional to 1,399,712.19, 1,930,994.42 and 855,870.63

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Solution

The fourth proportional to 1,399,712.19, 1,930,994.42 and 855,870.63 is: 1,180,729.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399,712.19 : 1,930,994.42 = 855,870.63 : x
  2. Step 2: Convert to fraction form
    1,399,712.19/1,930,994.42 = 855,870.63/x
  3. Step 3: Cross multiply
    1,399,712.19x = 1,930,994.42 × 855,870.63
  4. Step 4: Simplify right side
    1,399,712.19x = 1,652,681,406,492.53
  5. Step 5: Solve for x
    x = 1,652,681,406,492.53/1,399,712.19
  6. Step 6: Final answer
    x = 1,180,729.45

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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.