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Finding the Fourth Proportional to 562,078.09, 775,686.30 and 307,429.26

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Solution

The fourth proportional to 562,078.09, 775,686.30 and 307,429.26 is: 424,262.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,078.09 : 775,686.30 = 307,429.26 : x
  2. Step 2: Convert to fraction form
    562,078.09/775,686.30 = 307,429.26/x
  3. Step 3: Cross multiply
    562,078.09x = 775,686.30 × 307,429.26
  4. Step 4: Simplify right side
    562,078.09x = 238,468,659,785.56
  5. Step 5: Solve for x
    x = 238,468,659,785.56/562,078.09
  6. Step 6: Final answer
    x = 424,262.51

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1.5x scale

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.