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Finding the Fourth Proportional to 567,908.54, 783,718.79 and 309,786.63

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Solution

The fourth proportional to 567,908.54, 783,718.79 and 309,786.63 is: 427,508.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,908.54 : 783,718.79 = 309,786.63 : x
  2. Step 2: Convert to fraction form
    567,908.54/783,718.79 = 309,786.63/x
  3. Step 3: Cross multiply
    567,908.54x = 783,718.79 × 309,786.63
  4. Step 4: Simplify right side
    567,908.54x = 242,785,602,434.54
  5. Step 5: Solve for x
    x = 242,785,602,434.54/567,908.54
  6. Step 6: Final answer
    x = 427,508.28

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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.