Home / 1,238,657.20-1,858,039.80-340,075.60

Finding the Fourth Proportional to 1,238,657.20, 1,858,039.80 and 340,075.60

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Solution

The fourth proportional to 1,238,657.20, 1,858,039.80 and 340,075.60 is: 510,128.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,657.20 : 1,858,039.80 = 340,075.60 : x
  2. Step 2: Convert to fraction form
    1,238,657.20/1,858,039.80 = 340,075.60/x
  3. Step 3: Cross multiply
    1,238,657.20x = 1,858,039.80 × 340,075.60
  4. Step 4: Simplify right side
    1,238,657.20x = 631,873,999,808.88
  5. Step 5: Solve for x
    x = 631,873,999,808.88/1,238,657.20
  6. Step 6: Final answer
    x = 510,128.23

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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.