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Finding the Fourth Proportional to 550,784.57, 760,080.66 and 309,066.60

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Solution

The fourth proportional to 550,784.57, 760,080.66 and 309,066.60 is: 426,510.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,784.57 : 760,080.66 = 309,066.60 : x
  2. Step 2: Convert to fraction form
    550,784.57/760,080.66 = 309,066.60/x
  3. Step 3: Cross multiply
    550,784.57x = 760,080.66 × 309,066.60
  4. Step 4: Simplify right side
    550,784.57x = 234,915,545,311.96
  5. Step 5: Solve for x
    x = 234,915,545,311.96/550,784.57
  6. Step 6: Final answer
    x = 426,510.76

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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.