Home / 1,389,620,945.12-2,084,498,454.76-456,923,143.64

Finding the Fourth Proportional to 1,389,620,945.12, 2,084,498,454.76 and 456,923,143.64

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Solution

The fourth proportional to 1,389,620,945.12, 2,084,498,454.76 and 456,923,143.64 is: 685,406,758.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,620,945.12 : 2,084,498,454.76 = 456,923,143.64 : x
  2. Step 2: Convert to fraction form
    1,389,620,945.12/2,084,498,454.76 = 456,923,143.64/x
  3. Step 3: Cross multiply
    1,389,620,945.12x = 2,084,498,454.76 × 456,923,143.64
  4. Step 4: Simplify right side
    1,389,620,945.12x = 952,455,586,865,730,432
  5. Step 5: Solve for x
    x = 952,455,586,865,730,432/1,389,620,945.12
  6. Step 6: Final answer
    x = 685,406,758.02

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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.