Home / 986,939.04-1,361,976.48-557,220

Finding the Fourth Proportional to 986,939.04, 1,361,976.48 and 557,220

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Solution

The fourth proportional to 986,939.04, 1,361,976.48 and 557,220 is: 768,963.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,939.04 : 1,361,976.48 = 557,220 : x
  2. Step 2: Convert to fraction form
    986,939.04/1,361,976.48 = 557,220/x
  3. Step 3: Cross multiply
    986,939.04x = 1,361,976.48 × 557,220
  4. Step 4: Simplify right side
    986,939.04x = 758,920,534,185.60
  5. Step 5: Solve for x
    x = 758,920,534,185.60/986,939.04
  6. Step 6: Final answer
    x = 768,963.94

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1.5x scale

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.