Home / 780,454,981.51-1,077,095,986.92-428,099,073.22

Finding the Fourth Proportional to 780,454,981.51, 1,077,095,986.92 and 428,099,073.22

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Solution

The fourth proportional to 780,454,981.51, 1,077,095,986.92 and 428,099,073.22 is: 590,814,082.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,454,981.51 : 1,077,095,986.92 = 428,099,073.22 : x
  2. Step 2: Convert to fraction form
    780,454,981.51/1,077,095,986.92 = 428,099,073.22/x
  3. Step 3: Cross multiply
    780,454,981.51x = 1,077,095,986.92 × 428,099,073.22
  4. Step 4: Simplify right side
    780,454,981.51x = 461,103,793,769,433,280
  5. Step 5: Solve for x
    x = 461,103,793,769,433,280/780,454,981.51
  6. Step 6: Final answer
    x = 590,814,082.42

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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.