Home / 724,519.84-1,085,247.60-458,142.88

Finding the Fourth Proportional to 724,519.84, 1,085,247.60 and 458,142.88

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Solution

The fourth proportional to 724,519.84, 1,085,247.60 and 458,142.88 is: 686,245.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,519.84 : 1,085,247.60 = 458,142.88 : x
  2. Step 2: Convert to fraction form
    724,519.84/1,085,247.60 = 458,142.88/x
  3. Step 3: Cross multiply
    724,519.84x = 1,085,247.60 × 458,142.88
  4. Step 4: Simplify right side
    724,519.84x = 497,198,460,977.09
  5. Step 5: Solve for x
    x = 497,198,460,977.09/724,519.84
  6. Step 6: Final answer
    x = 686,245.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.