Home / 780,454,980.51-1,077,095,985.54-428,099,072.22

Finding the Fourth Proportional to 780,454,980.51, 1,077,095,985.54 and 428,099,072.22

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Solution

The fourth proportional to 780,454,980.51, 1,077,095,985.54 and 428,099,072.22 is: 590,814,081.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,454,980.51 : 1,077,095,985.54 = 428,099,072.22 : x
  2. Step 2: Convert to fraction form
    780,454,980.51/1,077,095,985.54 = 428,099,072.22/x
  3. Step 3: Cross multiply
    780,454,980.51x = 1,077,095,985.54 × 428,099,072.22
  4. Step 4: Simplify right side
    780,454,980.51x = 461,103,792,101,560,576
  5. Step 5: Solve for x
    x = 461,103,792,101,560,576/780,454,980.51
  6. Step 6: Final answer
    x = 590,814,081.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.