Home / 1,338,907.20-2,007,727.20-778,113.60

Finding the Fourth Proportional to 1,338,907.20, 2,007,727.20 and 778,113.60

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Solution

The fourth proportional to 1,338,907.20, 2,007,727.20 and 778,113.60 is: 1,166,802.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338,907.20 : 2,007,727.20 = 778,113.60 : x
  2. Step 2: Convert to fraction form
    1,338,907.20/2,007,727.20 = 778,113.60/x
  3. Step 3: Cross multiply
    1,338,907.20x = 2,007,727.20 × 778,113.60
  4. Step 4: Simplify right side
    1,338,907.20x = 1,562,239,839,409.92
  5. Step 5: Solve for x
    x = 1,562,239,839,409.92/1,338,907.20
  6. Step 6: Final answer
    x = 1,166,802.18

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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.