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Finding the Fourth Proportional to 567,564.57, 783,249.35 and 309,443.49

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Solution

The fourth proportional to 567,564.57, 783,249.35 and 309,443.49 is: 427,037.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,564.57 : 783,249.35 = 309,443.49 : x
  2. Step 2: Convert to fraction form
    567,564.57/783,249.35 = 309,443.49/x
  3. Step 3: Cross multiply
    567,564.57x = 783,249.35 × 309,443.49
  4. Step 4: Simplify right side
    567,564.57x = 242,371,410,857.01
  5. Step 5: Solve for x
    x = 242,371,410,857.01/567,564.57
  6. Step 6: Final answer
    x = 427,037.60

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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.