Home / 980,012.52-1,470,109.70-381,019.19

Finding the Fourth Proportional to 980,012.52, 1,470,109.70 and 381,019.19

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Solution

The fourth proportional to 980,012.52, 1,470,109.70 and 381,019.19 is: 571,564.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,012.52 : 1,470,109.70 = 381,019.19 : x
  2. Step 2: Convert to fraction form
    980,012.52/1,470,109.70 = 381,019.19/x
  3. Step 3: Cross multiply
    980,012.52x = 1,470,109.70 × 381,019.19
  4. Step 4: Simplify right side
    980,012.52x = 560,140,008,976.51
  5. Step 5: Solve for x
    x = 560,140,008,976.51/980,012.52
  6. Step 6: Final answer
    x = 571,564.14

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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.