Home / 912,090.96-1,368,139.68-281,001.60

Finding the Fourth Proportional to 912,090.96, 1,368,139.68 and 281,001.60

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Solution

The fourth proportional to 912,090.96, 1,368,139.68 and 281,001.60 is: 421,503.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,090.96 : 1,368,139.68 = 281,001.60 : x
  2. Step 2: Convert to fraction form
    912,090.96/1,368,139.68 = 281,001.60/x
  3. Step 3: Cross multiply
    912,090.96x = 1,368,139.68 × 281,001.60
  4. Step 4: Simplify right side
    912,090.96x = 384,449,439,103.49
  5. Step 5: Solve for x
    x = 384,449,439,103.49/912,090.96
  6. Step 6: Final answer
    x = 421,503.40

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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.