Home / 791,105.10-1,091,730.28-428,528.96

Finding the Fourth Proportional to 791,105.10, 1,091,730.28 and 428,528.96

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Solution

The fourth proportional to 791,105.10, 1,091,730.28 and 428,528.96 is: 591,372.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,105.10 : 1,091,730.28 = 428,528.96 : x
  2. Step 2: Convert to fraction form
    791,105.10/1,091,730.28 = 428,528.96/x
  3. Step 3: Cross multiply
    791,105.10x = 1,091,730.28 × 428,528.96
  4. Step 4: Simplify right side
    791,105.10x = 467,838,043,457.81
  5. Step 5: Solve for x
    x = 467,838,043,457.81/791,105.10
  6. Step 6: Final answer
    x = 591,372.80

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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.