Home / 1,387,953.44-1,915,364.93-776,107.39

Finding the Fourth Proportional to 1,387,953.44, 1,915,364.93 and 776,107.39

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Solution

The fourth proportional to 1,387,953.44, 1,915,364.93 and 776,107.39 is: 1,071,022.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,953.44 : 1,915,364.93 = 776,107.39 : x
  2. Step 2: Convert to fraction form
    1,387,953.44/1,915,364.93 = 776,107.39/x
  3. Step 3: Cross multiply
    1,387,953.44x = 1,915,364.93 × 776,107.39
  4. Step 4: Simplify right side
    1,387,953.44x = 1,486,528,868,050.88
  5. Step 5: Solve for x
    x = 1,486,528,868,050.88/1,387,953.44
  6. Step 6: Final answer
    x = 1,071,022.14

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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.