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Finding the Fourth Proportional to 562,609.09, 776,207.76 and 320,716.87

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Solution

The fourth proportional to 562,609.09, 776,207.76 and 320,716.87 is: 442,479.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,609.09 : 776,207.76 = 320,716.87 : x
  2. Step 2: Convert to fraction form
    562,609.09/776,207.76 = 320,716.87/x
  3. Step 3: Cross multiply
    562,609.09x = 776,207.76 × 320,716.87
  4. Step 4: Simplify right side
    562,609.09x = 248,942,921,917.74
  5. Step 5: Solve for x
    x = 248,942,921,917.74/562,609.09
  6. Step 6: Final answer
    x = 442,479.38

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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.