Home / 728,905.16-1,005,914.10-422,958.44

Finding the Fourth Proportional to 728,905.16, 1,005,914.10 and 422,958.44

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Solution

The fourth proportional to 728,905.16, 1,005,914.10 and 422,958.44 is: 583,697.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,905.16 : 1,005,914.10 = 422,958.44 : x
  2. Step 2: Convert to fraction form
    728,905.16/1,005,914.10 = 422,958.44/x
  3. Step 3: Cross multiply
    728,905.16x = 1,005,914.10 × 422,958.44
  4. Step 4: Simplify right side
    728,905.16x = 425,459,858,510.00
  5. Step 5: Solve for x
    x = 425,459,858,510.00/728,905.16
  6. Step 6: Final answer
    x = 583,697.14

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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.