Home / 865,459,620.44-1,298,199,403.32-312,804,020.60

Finding the Fourth Proportional to 865,459,620.44, 1,298,199,403.32 and 312,804,020.60

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Solution

The fourth proportional to 865,459,620.44, 1,298,199,403.32 and 312,804,020.60 is: 469,209,635.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,459,620.44 : 1,298,199,403.32 = 312,804,020.60 : x
  2. Step 2: Convert to fraction form
    865,459,620.44/1,298,199,403.32 = 312,804,020.60/x
  3. Step 3: Cross multiply
    865,459,620.44x = 1,298,199,403.32 × 312,804,020.60
  4. Step 4: Simplify right side
    865,459,620.44x = 406,081,992,899,017,024
  5. Step 5: Solve for x
    x = 406,081,992,899,017,024/865,459,620.44
  6. Step 6: Final answer
    x = 469,209,635.33

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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.