Home / 1,395,919.89-1,925,878.86-912,767.85

Finding the Fourth Proportional to 1,395,919.89, 1,925,878.86 and 912,767.85

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Solution

The fourth proportional to 1,395,919.89, 1,925,878.86 and 912,767.85 is: 1,259,298.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395,919.89 : 1,925,878.86 = 912,767.85 : x
  2. Step 2: Convert to fraction form
    1,395,919.89/1,925,878.86 = 912,767.85/x
  3. Step 3: Cross multiply
    1,395,919.89x = 1,925,878.86 × 912,767.85
  4. Step 4: Simplify right side
    1,395,919.89x = 1,757,880,306,402.65
  5. Step 5: Solve for x
    x = 1,757,880,306,402.65/1,395,919.89
  6. Step 6: Final answer
    x = 1,259,298.85

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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.