Home / 991,155.90-1,486,790.37-281,128.14

Finding the Fourth Proportional to 991,155.90, 1,486,790.37 and 281,128.14

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Solution

The fourth proportional to 991,155.90, 1,486,790.37 and 281,128.14 is: 421,708.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,155.90 : 1,486,790.37 = 281,128.14 : x
  2. Step 2: Convert to fraction form
    991,155.90/1,486,790.37 = 281,128.14/x
  3. Step 3: Cross multiply
    991,155.90x = 1,486,790.37 × 281,128.14
  4. Step 4: Simplify right side
    991,155.90x = 417,978,611,288.01
  5. Step 5: Solve for x
    x = 417,978,611,288.01/991,155.90
  6. Step 6: Final answer
    x = 421,708.24

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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.