Home / 1,422,865.18-1,963,569.39-778,271.20

Finding the Fourth Proportional to 1,422,865.18, 1,963,569.39 and 778,271.20

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Solution

The fourth proportional to 1,422,865.18, 1,963,569.39 and 778,271.20 is: 1,074,022.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422,865.18 : 1,963,569.39 = 778,271.20 : x
  2. Step 2: Convert to fraction form
    1,422,865.18/1,963,569.39 = 778,271.20/x
  3. Step 3: Cross multiply
    1,422,865.18x = 1,963,569.39 × 778,271.20
  4. Step 4: Simplify right side
    1,422,865.18x = 1,528,189,505,438.57
  5. Step 5: Solve for x
    x = 1,528,189,505,438.57/1,422,865.18
  6. Step 6: Final answer
    x = 1,074,022.70

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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.