Home / 991,153.40-1,486,786.58-281,125.64

Finding the Fourth Proportional to 991,153.40, 1,486,786.58 and 281,125.64

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Solution

The fourth proportional to 991,153.40, 1,486,786.58 and 281,125.64 is: 421,704.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,153.40 : 1,486,786.58 = 281,125.64 : x
  2. Step 2: Convert to fraction form
    991,153.40/1,486,786.58 = 281,125.64/x
  3. Step 3: Cross multiply
    991,153.40x = 1,486,786.58 × 281,125.64
  4. Step 4: Simplify right side
    991,153.40x = 417,973,828,845.91
  5. Step 5: Solve for x
    x = 417,973,828,845.91/991,153.40
  6. Step 6: Final answer
    x = 421,704.48

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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.