Home / 817,642.79-1,226,455.82-210,428.73

Finding the Fourth Proportional to 817,642.79, 1,226,455.82 and 210,428.73

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Solution

The fourth proportional to 817,642.79, 1,226,455.82 and 210,428.73 is: 315,640.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,642.79 : 1,226,455.82 = 210,428.73 : x
  2. Step 2: Convert to fraction form
    817,642.79/1,226,455.82 = 210,428.73/x
  3. Step 3: Cross multiply
    817,642.79x = 1,226,455.82 × 210,428.73
  4. Step 4: Simplify right side
    817,642.79x = 258,081,533,419.29
  5. Step 5: Solve for x
    x = 258,081,533,419.29/817,642.79
  6. Step 6: Final answer
    x = 315,640.93

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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.