Home / 1,393,358.44-1,922,680.91-781,385.27

Finding the Fourth Proportional to 1,393,358.44, 1,922,680.91 and 781,385.27

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Solution

The fourth proportional to 1,393,358.44, 1,922,680.91 and 781,385.27 is: 1,078,225.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393,358.44 : 1,922,680.91 = 781,385.27 : x
  2. Step 2: Convert to fraction form
    1,393,358.44/1,922,680.91 = 781,385.27/x
  3. Step 3: Cross multiply
    1,393,358.44x = 1,922,680.91 × 781,385.27
  4. Step 4: Simplify right side
    1,393,358.44x = 1,502,354,533,533.99
  5. Step 5: Solve for x
    x = 1,502,354,533,533.99/1,393,358.44
  6. Step 6: Final answer
    x = 1,078,225.45

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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.