Home / 1,397,423.80-1,928,648.64-785,627.02

Finding the Fourth Proportional to 1,397,423.80, 1,928,648.64 and 785,627.02

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Solution

The fourth proportional to 1,397,423.80, 1,928,648.64 and 785,627.02 is: 1,084,279.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,397,423.80 : 1,928,648.64 = 785,627.02 : x
  2. Step 2: Convert to fraction form
    1,397,423.80/1,928,648.64 = 785,627.02/x
  3. Step 3: Cross multiply
    1,397,423.80x = 1,928,648.64 × 785,627.02
  4. Step 4: Simplify right side
    1,397,423.80x = 1,515,198,483,670.25
  5. Step 5: Solve for x
    x = 1,515,198,483,670.25/1,397,423.80
  6. Step 6: Final answer
    x = 1,084,279.86

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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.