Home / 1,385,979.34-1,912,631.33-774,140.82

Finding the Fourth Proportional to 1,385,979.34, 1,912,631.33 and 774,140.82

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Solution

The fourth proportional to 1,385,979.34, 1,912,631.33 and 774,140.82 is: 1,068,303.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,979.34 : 1,912,631.33 = 774,140.82 : x
  2. Step 2: Convert to fraction form
    1,385,979.34/1,912,631.33 = 774,140.82/x
  3. Step 3: Cross multiply
    1,385,979.34x = 1,912,631.33 × 774,140.82
  4. Step 4: Simplify right side
    1,385,979.34x = 1,480,645,986,163.89
  5. Step 5: Solve for x
    x = 1,480,645,986,163.89/1,385,979.34
  6. Step 6: Final answer
    x = 1,068,303.07

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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.