Home / 1,245,125.70-1,867,688.55-1,087,661.70

Finding the Fourth Proportional to 1,245,125.70, 1,867,688.55 and 1,087,661.70

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Solution

The fourth proportional to 1,245,125.70, 1,867,688.55 and 1,087,661.70 is: 1,631,492.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,125.70 : 1,867,688.55 = 1,087,661.70 : x
  2. Step 2: Convert to fraction form
    1,245,125.70/1,867,688.55 = 1,087,661.70/x
  3. Step 3: Cross multiply
    1,245,125.70x = 1,867,688.55 × 1,087,661.70
  4. Step 4: Simplify right side
    1,245,125.70x = 2,031,413,303,363.54
  5. Step 5: Solve for x
    x = 2,031,413,303,363.54/1,245,125.70
  6. Step 6: Final answer
    x = 1,631,492.55

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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.