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Finding the Fourth Proportional to 708,790.67, 978,095.67 and 402,826.62

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Solution

The fourth proportional to 708,790.67, 978,095.67 and 402,826.62 is: 555,880.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,790.67 : 978,095.67 = 402,826.62 : x
  2. Step 2: Convert to fraction form
    708,790.67/978,095.67 = 402,826.62/x
  3. Step 3: Cross multiply
    708,790.67x = 978,095.67 × 402,826.62
  4. Step 4: Simplify right side
    708,790.67x = 394,002,972,782.74
  5. Step 5: Solve for x
    x = 394,002,972,782.74/708,790.67
  6. Step 6: Final answer
    x = 555,880.59

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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.