Home / 426,048,537.80-639,072,806.70-349,458,048.20

Finding the Fourth Proportional to 426,048,537.80, 639,072,806.70 and 349,458,048.20

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Solution

The fourth proportional to 426,048,537.80, 639,072,806.70 and 349,458,048.20 is: 524,187,072.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,048,537.80 : 639,072,806.70 = 349,458,048.20 : x
  2. Step 2: Convert to fraction form
    426,048,537.80/639,072,806.70 = 349,458,048.20/x
  3. Step 3: Cross multiply
    426,048,537.80x = 639,072,806.70 × 349,458,048.20
  4. Step 4: Simplify right side
    426,048,537.80x = 223,329,135,687,077,888
  5. Step 5: Solve for x
    x = 223,329,135,687,077,888/426,048,537.80
  6. Step 6: Final answer
    x = 524,187,072.30

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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.