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Finding the Fourth Proportional to 679,952.67, 938,305.74 and 374,009.64

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Solution

The fourth proportional to 679,952.67, 938,305.74 and 374,009.64 is: 516,117.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,952.67 : 938,305.74 = 374,009.64 : x
  2. Step 2: Convert to fraction form
    679,952.67/938,305.74 = 374,009.64/x
  3. Step 3: Cross multiply
    679,952.67x = 938,305.74 × 374,009.64
  4. Step 4: Simplify right side
    679,952.67x = 350,935,392,027.33
  5. Step 5: Solve for x
    x = 350,935,392,027.33/679,952.67
  6. Step 6: Final answer
    x = 516,117.38

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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.