Home / 1,393,050.62-1,922,431.86-781,339.40

Finding the Fourth Proportional to 1,393,050.62, 1,922,431.86 and 781,339.40

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Solution

The fourth proportional to 1,393,050.62, 1,922,431.86 and 781,339.40 is: 1,078,260.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393,050.62 : 1,922,431.86 = 781,339.40 : x
  2. Step 2: Convert to fraction form
    1,393,050.62/1,922,431.86 = 781,339.40/x
  3. Step 3: Cross multiply
    1,393,050.62x = 1,922,431.86 × 781,339.40
  4. Step 4: Simplify right side
    1,393,050.62x = 1,502,071,756,033.28
  5. Step 5: Solve for x
    x = 1,502,071,756,033.28/1,393,050.62
  6. Step 6: Final answer
    x = 1,078,260.71

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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.