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Finding the Fourth Proportional to 567,212.49, 782,743.20 and 309,091.71

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Solution

The fourth proportional to 567,212.49, 782,743.20 and 309,091.71 is: 426,541.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,212.49 : 782,743.20 = 309,091.71 : x
  2. Step 2: Convert to fraction form
    567,212.49/782,743.20 = 309,091.71/x
  3. Step 3: Cross multiply
    567,212.49x = 782,743.20 × 309,091.71
  4. Step 4: Simplify right side
    567,212.49x = 241,939,435,955.07
  5. Step 5: Solve for x
    x = 241,939,435,955.07/567,212.49
  6. Step 6: Final answer
    x = 426,541.09

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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.