Home / 685,531.41-946,032.75-379,607.78

Finding the Fourth Proportional to 685,531.41, 946,032.75 and 379,607.78

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Solution

The fourth proportional to 685,531.41, 946,032.75 and 379,607.78 is: 523,858.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,531.41 : 946,032.75 = 379,607.78 : x
  2. Step 2: Convert to fraction form
    685,531.41/946,032.75 = 379,607.78/x
  3. Step 3: Cross multiply
    685,531.41x = 946,032.75 × 379,607.78
  4. Step 4: Simplify right side
    685,531.41x = 359,121,387,304.63
  5. Step 5: Solve for x
    x = 359,121,387,304.63/685,531.41
  6. Step 6: Final answer
    x = 523,858.40

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Double scale
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Similar ratio
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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.