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Finding the Fourth Proportional to 562,078.15, 775,686.32 and 307,429.35

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Solution

The fourth proportional to 562,078.15, 775,686.32 and 307,429.35 is: 424,262.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,078.15 : 775,686.32 = 307,429.35 : x
  2. Step 2: Convert to fraction form
    562,078.15/775,686.32 = 307,429.35/x
  3. Step 3: Cross multiply
    562,078.15x = 775,686.32 × 307,429.35
  4. Step 4: Simplify right side
    562,078.15x = 238,468,741,161.49
  5. Step 5: Solve for x
    x = 238,468,741,161.49/562,078.15
  6. Step 6: Final answer
    x = 424,262.61

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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.