Home / 4,789,913.81-7,185,970.98-1,378,228.68

Finding the Fourth Proportional to 4,789,913.81, 7,185,970.98 and 1,378,228.68

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Solution

The fourth proportional to 4,789,913.81, 7,185,970.98 and 1,378,228.68 is: 2,067,659.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,789,913.81 : 7,185,970.98 = 1,378,228.68 : x
  2. Step 2: Convert to fraction form
    4,789,913.81/7,185,970.98 = 1,378,228.68/x
  3. Step 3: Cross multiply
    4,789,913.81x = 7,185,970.98 × 1,378,228.68
  4. Step 4: Simplify right side
    4,789,913.81x = 9,903,911,298,283.71
  5. Step 5: Solve for x
    x = 9,903,911,298,283.71/4,789,913.81
  6. Step 6: Final answer
    x = 2,067,659.61

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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.