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Finding the Fourth Proportional to 611,618.64, 844,023 and 339,676.12

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Solution

The fourth proportional to 611,618.64, 844,023 and 339,676.12 is: 468,747.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,618.64 : 844,023 = 339,676.12 : x
  2. Step 2: Convert to fraction form
    611,618.64/844,023 = 339,676.12/x
  3. Step 3: Cross multiply
    611,618.64x = 844,023 × 339,676.12
  4. Step 4: Simplify right side
    611,618.64x = 286,694,457,830.76
  5. Step 5: Solve for x
    x = 286,694,457,830.76/611,618.64
  6. Step 6: Final answer
    x = 468,747.09

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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.