Home / 2,685,139.80-4,027,709.70-912,211.80

Finding the Fourth Proportional to 2,685,139.80, 4,027,709.70 and 912,211.80

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Solution

The fourth proportional to 2,685,139.80, 4,027,709.70 and 912,211.80 is: 1,368,317.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,685,139.80 : 4,027,709.70 = 912,211.80 : x
  2. Step 2: Convert to fraction form
    2,685,139.80/4,027,709.70 = 912,211.80/x
  3. Step 3: Cross multiply
    2,685,139.80x = 4,027,709.70 × 912,211.80
  4. Step 4: Simplify right side
    2,685,139.80x = 3,674,124,315,314.46
  5. Step 5: Solve for x
    x = 3,674,124,315,314.46/2,685,139.80
  6. Step 6: Final answer
    x = 1,368,317.70

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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.