Home / 980,538.21-1,470,428.24-381,418.47

Finding the Fourth Proportional to 980,538.21, 1,470,428.24 and 381,418.47

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Solution

The fourth proportional to 980,538.21, 1,470,428.24 and 381,418.47 is: 571,980.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,538.21 : 1,470,428.24 = 381,418.47 : x
  2. Step 2: Convert to fraction form
    980,538.21/1,470,428.24 = 381,418.47/x
  3. Step 3: Cross multiply
    980,538.21x = 1,470,428.24 × 381,418.47
  4. Step 4: Simplify right side
    980,538.21x = 560,848,487,638.50
  5. Step 5: Solve for x
    x = 560,848,487,638.50/980,538.21
  6. Step 6: Final answer
    x = 571,980.25

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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.