Home / 3,178,628.16-4,386,561.69-1,728,333.39

Finding the Fourth Proportional to 3,178,628.16, 4,386,561.69 and 1,728,333.39

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Solution

The fourth proportional to 3,178,628.16, 4,386,561.69 and 1,728,333.39 is: 2,385,129.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178,628.16 : 4,386,561.69 = 1,728,333.39 : x
  2. Step 2: Convert to fraction form
    3,178,628.16/4,386,561.69 = 1,728,333.39/x
  3. Step 3: Cross multiply
    3,178,628.16x = 4,386,561.69 × 1,728,333.39
  4. Step 4: Simplify right side
    3,178,628.16x = 7,581,441,036,121.83
  5. Step 5: Solve for x
    x = 7,581,441,036,121.83/3,178,628.16
  6. Step 6: Final answer
    x = 2,385,129.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.