Home / 842,839,946.51-1,263,685,299.12-427,515,908.13

Finding the Fourth Proportional to 842,839,946.51, 1,263,685,299.12 and 427,515,908.13

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Solution

The fourth proportional to 842,839,946.51, 1,263,685,299.12 and 427,515,908.13 is: 640,982,395.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,839,946.51 : 1,263,685,299.12 = 427,515,908.13 : x
  2. Step 2: Convert to fraction form
    842,839,946.51/1,263,685,299.12 = 427,515,908.13/x
  3. Step 3: Cross multiply
    842,839,946.51x = 1,263,685,299.12 × 427,515,908.13
  4. Step 4: Simplify right side
    842,839,946.51x = 540,245,568,243,817,408
  5. Step 5: Solve for x
    x = 540,245,568,243,817,408/842,839,946.51
  6. Step 6: Final answer
    x = 640,982,395.87

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1.5x scale

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.