Home / 1,208,258.69-1,667,339.91-664,417.40

Finding the Fourth Proportional to 1,208,258.69, 1,667,339.91 and 664,417.40

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Solution

The fourth proportional to 1,208,258.69, 1,667,339.91 and 664,417.40 is: 916,864.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,258.69 : 1,667,339.91 = 664,417.40 : x
  2. Step 2: Convert to fraction form
    1,208,258.69/1,667,339.91 = 664,417.40/x
  3. Step 3: Cross multiply
    1,208,258.69x = 1,667,339.91 × 664,417.40
  4. Step 4: Simplify right side
    1,208,258.69x = 1,107,809,639,581.73
  5. Step 5: Solve for x
    x = 1,107,809,639,581.73/1,208,258.69
  6. Step 6: Final answer
    x = 916,864.62

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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.