Home / 992,813.60-1,489,220.40-728,429.60

Finding the Fourth Proportional to 992,813.60, 1,489,220.40 and 728,429.60

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Solution

The fourth proportional to 992,813.60, 1,489,220.40 and 728,429.60 is: 1,092,644.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,813.60 : 1,489,220.40 = 728,429.60 : x
  2. Step 2: Convert to fraction form
    992,813.60/1,489,220.40 = 728,429.60/x
  3. Step 3: Cross multiply
    992,813.60x = 1,489,220.40 × 728,429.60
  4. Step 4: Simplify right side
    992,813.60x = 1,084,792,220,283.84
  5. Step 5: Solve for x
    x = 1,084,792,220,283.84/992,813.60
  6. Step 6: Final answer
    x = 1,092,644.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.