Home / 800,314,276.80-1,200,172,816.80-315,539,774.40

Finding the Fourth Proportional to 800,314,276.80, 1,200,172,816.80 and 315,539,774.40

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Solution

The fourth proportional to 800,314,276.80, 1,200,172,816.80 and 315,539,774.40 is: 473,191,933.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,314,276.80 : 1,200,172,816.80 = 315,539,774.40 : x
  2. Step 2: Convert to fraction form
    800,314,276.80/1,200,172,816.80 = 315,539,774.40/x
  3. Step 3: Cross multiply
    800,314,276.80x = 1,200,172,816.80 × 315,539,774.40
  4. Step 4: Simplify right side
    800,314,276.80x = 378,702,259,854,084,480
  5. Step 5: Solve for x
    x = 378,702,259,854,084,480/800,314,276.80
  6. Step 6: Final answer
    x = 473,191,933.26

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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.