Home / 1,388,364.74-1,915,947.84-776,528.00

Finding the Fourth Proportional to 1,388,364.74, 1,915,947.84 and 776,528.00

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Solution

The fourth proportional to 1,388,364.74, 1,915,947.84 and 776,528.00 is: 1,071,611.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,364.74 : 1,915,947.84 = 776,528.00 : x
  2. Step 2: Convert to fraction form
    1,388,364.74/1,915,947.84 = 776,528.00/x
  3. Step 3: Cross multiply
    1,388,364.74x = 1,915,947.84 × 776,528.00
  4. Step 4: Simplify right side
    1,388,364.74x = 1,487,787,144,816.57
  5. Step 5: Solve for x
    x = 1,487,787,144,816.57/1,388,364.74
  6. Step 6: Final answer
    x = 1,071,611.16

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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.