Home / 1,430,504.80-2,147,139.60-870,632.80

Finding the Fourth Proportional to 1,430,504.80, 2,147,139.60 and 870,632.80

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Solution

The fourth proportional to 1,430,504.80, 2,147,139.60 and 870,632.80 is: 1,306,790.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,430,504.80 : 2,147,139.60 = 870,632.80 : x
  2. Step 2: Convert to fraction form
    1,430,504.80/2,147,139.60 = 870,632.80/x
  3. Step 3: Cross multiply
    1,430,504.80x = 2,147,139.60 × 870,632.80
  4. Step 4: Simplify right side
    1,430,504.80x = 1,869,370,161,938.88
  5. Step 5: Solve for x
    x = 1,869,370,161,938.88/1,430,504.80
  6. Step 6: Final answer
    x = 1,306,790.56

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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.