Home / 1,388,158.92-1,915,756.92-776,368.60

Finding the Fourth Proportional to 1,388,158.92, 1,915,756.92 and 776,368.60

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Solution

The fourth proportional to 1,388,158.92, 1,915,756.92 and 776,368.60 is: 1,071,443.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,158.92 : 1,915,756.92 = 776,368.60 : x
  2. Step 2: Convert to fraction form
    1,388,158.92/1,915,756.92 = 776,368.60/x
  3. Step 3: Cross multiply
    1,388,158.92x = 1,915,756.92 × 776,368.60
  4. Step 4: Simplify right side
    1,388,158.92x = 1,487,333,524,651.03
  5. Step 5: Solve for x
    x = 1,487,333,524,651.03/1,388,158.92
  6. Step 6: Final answer
    x = 1,071,443.27

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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.