Home / 746,760,666.60-1,120,140,999.90-280,421,189.10

Finding the Fourth Proportional to 746,760,666.60, 1,120,140,999.90 and 280,421,189.10

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Solution

The fourth proportional to 746,760,666.60, 1,120,140,999.90 and 280,421,189.10 is: 420,631,783.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    746,760,666.60 : 1,120,140,999.90 = 280,421,189.10 : x
  2. Step 2: Convert to fraction form
    746,760,666.60/1,120,140,999.90 = 280,421,189.10/x
  3. Step 3: Cross multiply
    746,760,666.60x = 1,120,140,999.90 × 280,421,189.10
  4. Step 4: Simplify right side
    746,760,666.60x = 314,111,271,151,621,056
  5. Step 5: Solve for x
    x = 314,111,271,151,621,056/746,760,666.60
  6. Step 6: Final answer
    x = 420,631,783.65

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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.