Home / 865,459,620.46-1,298,199,403.32-312,804,020.62

Finding the Fourth Proportional to 865,459,620.46, 1,298,199,403.32 and 312,804,020.62

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Solution

The fourth proportional to 865,459,620.46, 1,298,199,403.32 and 312,804,020.62 is: 469,209,635.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,459,620.46 : 1,298,199,403.32 = 312,804,020.62 : x
  2. Step 2: Convert to fraction form
    865,459,620.46/1,298,199,403.32 = 312,804,020.62/x
  3. Step 3: Cross multiply
    865,459,620.46x = 1,298,199,403.32 × 312,804,020.62
  4. Step 4: Simplify right side
    865,459,620.46x = 406,081,992,924,980,992
  5. Step 5: Solve for x
    x = 406,081,992,924,980,992/865,459,620.46
  6. Step 6: Final answer
    x = 469,209,635.35

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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.