Home / 859,431,333.20-1,289,146,999.80-284,928,011.60

Finding the Fourth Proportional to 859,431,333.20, 1,289,146,999.80 and 284,928,011.60

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Solution

The fourth proportional to 859,431,333.20, 1,289,146,999.80 and 284,928,011.60 is: 427,392,017.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,431,333.20 : 1,289,146,999.80 = 284,928,011.60 : x
  2. Step 2: Convert to fraction form
    859,431,333.20/1,289,146,999.80 = 284,928,011.60/x
  3. Step 3: Cross multiply
    859,431,333.20x = 1,289,146,999.80 × 284,928,011.60
  4. Step 4: Simplify right side
    859,431,333.20x = 367,314,091,313,119,616
  5. Step 5: Solve for x
    x = 367,314,091,313,119,616/859,431,333.20
  6. Step 6: Final answer
    x = 427,392,017.40

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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.