Home / 692,440.80-1,038,661.20-664,792.80

Finding the Fourth Proportional to 692,440.80, 1,038,661.20 and 664,792.80

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Solution

The fourth proportional to 692,440.80, 1,038,661.20 and 664,792.80 is: 997,189.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,440.80 : 1,038,661.20 = 664,792.80 : x
  2. Step 2: Convert to fraction form
    692,440.80/1,038,661.20 = 664,792.80/x
  3. Step 3: Cross multiply
    692,440.80x = 1,038,661.20 × 664,792.80
  4. Step 4: Simplify right side
    692,440.80x = 690,494,487,399.36
  5. Step 5: Solve for x
    x = 690,494,487,399.36/692,440.80
  6. Step 6: Final answer
    x = 997,189.20

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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.