Home / 1,557,075.20-2,335,612.80-1,388,785.55

Finding the Fourth Proportional to 1,557,075.20, 2,335,612.80 and 1,388,785.55

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Solution

The fourth proportional to 1,557,075.20, 2,335,612.80 and 1,388,785.55 is: 2,083,178.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557,075.20 : 2,335,612.80 = 1,388,785.55 : x
  2. Step 2: Convert to fraction form
    1,557,075.20/2,335,612.80 = 1,388,785.55/x
  3. Step 3: Cross multiply
    1,557,075.20x = 2,335,612.80 × 1,388,785.55
  4. Step 4: Simplify right side
    1,557,075.20x = 3,243,665,307,035.04
  5. Step 5: Solve for x
    x = 3,243,665,307,035.04/1,557,075.20
  6. Step 6: Final answer
    x = 2,083,178.33

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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.