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Finding the Fourth Proportional to 869,944, 1,200,520.27 and 482,817.87

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Solution

The fourth proportional to 869,944, 1,200,520.27 and 482,817.87 is: 666,287.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,944 : 1,200,520.27 = 482,817.87 : x
  2. Step 2: Convert to fraction form
    869,944/1,200,520.27 = 482,817.87/x
  3. Step 3: Cross multiply
    869,944x = 1,200,520.27 × 482,817.87
  4. Step 4: Simplify right side
    869,944x = 579,632,637,239.14
  5. Step 5: Solve for x
    x = 579,632,637,239.14/869,944
  6. Step 6: Final answer
    x = 666,287.30

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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.