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Finding the Fourth Proportional to 561,354.67, 774,660.39 and 306,700.39

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Solution

The fourth proportional to 561,354.67, 774,660.39 and 306,700.39 is: 423,241.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,354.67 : 774,660.39 = 306,700.39 : x
  2. Step 2: Convert to fraction form
    561,354.67/774,660.39 = 306,700.39/x
  3. Step 3: Cross multiply
    561,354.67x = 774,660.39 × 306,700.39
  4. Step 4: Simplify right side
    561,354.67x = 237,588,643,730.55
  5. Step 5: Solve for x
    x = 237,588,643,730.55/561,354.67
  6. Step 6: Final answer
    x = 423,241.59

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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.