Home / 407,331,568.35-611,391,947.49-385,210,336.77

Finding the Fourth Proportional to 407,331,568.35, 611,391,947.49 and 385,210,336.77

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Solution

The fourth proportional to 407,331,568.35, 611,391,947.49 and 385,210,336.77 is: 578,188,670.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,331,568.35 : 611,391,947.49 = 385,210,336.77 : x
  2. Step 2: Convert to fraction form
    407,331,568.35/611,391,947.49 = 385,210,336.77/x
  3. Step 3: Cross multiply
    407,331,568.35x = 611,391,947.49 × 385,210,336.77
  4. Step 4: Simplify right side
    407,331,568.35x = 235,514,497,991,089,056
  5. Step 5: Solve for x
    x = 235,514,497,991,089,056/407,331,568.35
  6. Step 6: Final answer
    x = 578,188,670.58

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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.