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Finding the Fourth Proportional to 750,820, 1,036,131.60 and 411,289.60

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Solution

The fourth proportional to 750,820, 1,036,131.60 and 411,289.60 is: 567,579.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    750,820 : 1,036,131.60 = 411,289.60 : x
  2. Step 2: Convert to fraction form
    750,820/1,036,131.60 = 411,289.60/x
  3. Step 3: Cross multiply
    750,820x = 1,036,131.60 × 411,289.60
  4. Step 4: Simplify right side
    750,820x = 426,150,151,311.36
  5. Step 5: Solve for x
    x = 426,150,151,311.36/750,820
  6. Step 6: Final answer
    x = 567,579.65

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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.