Home / 1,277,920.40-1,916,880.60-331,283.60

Finding the Fourth Proportional to 1,277,920.40, 1,916,880.60 and 331,283.60

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Solution

The fourth proportional to 1,277,920.40, 1,916,880.60 and 331,283.60 is: 496,925.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277,920.40 : 1,916,880.60 = 331,283.60 : x
  2. Step 2: Convert to fraction form
    1,277,920.40/1,916,880.60 = 331,283.60/x
  3. Step 3: Cross multiply
    1,277,920.40x = 1,916,880.60 × 331,283.60
  4. Step 4: Simplify right side
    1,277,920.40x = 635,031,105,938.16
  5. Step 5: Solve for x
    x = 635,031,105,938.16/1,277,920.40
  6. Step 6: Final answer
    x = 496,925.40

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.