Home / 841,253.80-1,261,880.70-505,330.60

Finding the Fourth Proportional to 841,253.80, 1,261,880.70 and 505,330.60

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Solution

The fourth proportional to 841,253.80, 1,261,880.70 and 505,330.60 is: 757,995.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    841,253.80 : 1,261,880.70 = 505,330.60 : x
  2. Step 2: Convert to fraction form
    841,253.80/1,261,880.70 = 505,330.60/x
  3. Step 3: Cross multiply
    841,253.80x = 1,261,880.70 × 505,330.60
  4. Step 4: Simplify right side
    841,253.80x = 637,666,931,259.42
  5. Step 5: Solve for x
    x = 637,666,931,259.42/841,253.80
  6. Step 6: Final answer
    x = 757,995.90

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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.