Home / 658,938.96-909,350.28-404,139.60

Finding the Fourth Proportional to 658,938.96, 909,350.28 and 404,139.60

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Solution

The fourth proportional to 658,938.96, 909,350.28 and 404,139.60 is: 557,721.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,938.96 : 909,350.28 = 404,139.60 : x
  2. Step 2: Convert to fraction form
    658,938.96/909,350.28 = 404,139.60/x
  3. Step 3: Cross multiply
    658,938.96x = 909,350.28 × 404,139.60
  4. Step 4: Simplify right side
    658,938.96x = 367,504,458,419.09
  5. Step 5: Solve for x
    x = 367,504,458,419.09/658,938.96
  6. Step 6: Final answer
    x = 557,721.55

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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.