Home / 1,185,526,749.16-1,778,128,689.66-312,054,974.20

Finding the Fourth Proportional to 1,185,526,749.16, 1,778,128,689.66 and 312,054,974.20

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Solution

The fourth proportional to 1,185,526,749.16, 1,778,128,689.66 and 312,054,974.20 is: 468,039,968.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,526,749.16 : 1,778,128,689.66 = 312,054,974.20 : x
  2. Step 2: Convert to fraction form
    1,185,526,749.16/1,778,128,689.66 = 312,054,974.20/x
  3. Step 3: Cross multiply
    1,185,526,749.16x = 1,778,128,689.66 × 312,054,974.20
  4. Step 4: Simplify right side
    1,185,526,749.16x = 554,873,902,376,131,136
  5. Step 5: Solve for x
    x = 554,873,902,376,131,136/1,185,526,749.16
  6. Step 6: Final answer
    x = 468,039,968.54

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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.