Home / 855,479,901.20-1,283,219,851.80-310,239,222.80

Finding the Fourth Proportional to 855,479,901.20, 1,283,219,851.80 and 310,239,222.80

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Solution

The fourth proportional to 855,479,901.20, 1,283,219,851.80 and 310,239,222.80 is: 465,358,834.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,479,901.20 : 1,283,219,851.80 = 310,239,222.80 : x
  2. Step 2: Convert to fraction form
    855,479,901.20/1,283,219,851.80 = 310,239,222.80/x
  3. Step 3: Cross multiply
    855,479,901.20x = 1,283,219,851.80 × 310,239,222.80
  4. Step 4: Simplify right side
    855,479,901.20x = 398,105,129,503,963,200
  5. Step 5: Solve for x
    x = 398,105,129,503,963,200/855,479,901.20
  6. Step 6: Final answer
    x = 465,358,834.20

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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.