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Finding the Fourth Proportional to 679,383, 938,507.82 and 544,313.88

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Solution

The fourth proportional to 679,383, 938,507.82 and 544,313.88 is: 751,921.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,383 : 938,507.82 = 544,313.88 : x
  2. Step 2: Convert to fraction form
    679,383/938,507.82 = 544,313.88/x
  3. Step 3: Cross multiply
    679,383x = 938,507.82 × 544,313.88
  4. Step 4: Simplify right side
    679,383x = 510,842,832,914.54
  5. Step 5: Solve for x
    x = 510,842,832,914.54/679,383
  6. Step 6: Final answer
    x = 751,921.72

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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.