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Finding the Fourth Proportional to 905,355, 1,358,242.56 and 265,632.93

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Solution

The fourth proportional to 905,355, 1,358,242.56 and 265,632.93 is: 398,511.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,355 : 1,358,242.56 = 265,632.93 : x
  2. Step 2: Convert to fraction form
    905,355/1,358,242.56 = 265,632.93/x
  3. Step 3: Cross multiply
    905,355x = 1,358,242.56 × 265,632.93
  4. Step 4: Simplify right side
    905,355x = 360,793,950,863.50
  5. Step 5: Solve for x
    x = 360,793,950,863.50/905,355
  6. Step 6: Final answer
    x = 398,511.03

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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.