Home / 1,390,642.08-1,919,280.52-1,004,706.56

Finding the Fourth Proportional to 1,390,642.08, 1,919,280.52 and 1,004,706.56

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Solution

The fourth proportional to 1,390,642.08, 1,919,280.52 and 1,004,706.56 is: 1,386,635.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,642.08 : 1,919,280.52 = 1,004,706.56 : x
  2. Step 2: Convert to fraction form
    1,390,642.08/1,919,280.52 = 1,004,706.56/x
  3. Step 3: Cross multiply
    1,390,642.08x = 1,919,280.52 × 1,004,706.56
  4. Step 4: Simplify right side
    1,390,642.08x = 1,928,313,728,924.21
  5. Step 5: Solve for x
    x = 1,928,313,728,924.21/1,390,642.08
  6. Step 6: Final answer
    x = 1,386,635.54

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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.