Home / 678,533,641.86-936,107,160.48-392,372,289.30

Finding the Fourth Proportional to 678,533,641.86, 936,107,160.48 and 392,372,289.30

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Solution

The fourth proportional to 678,533,641.86, 936,107,160.48 and 392,372,289.30 is: 541,318,052.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,533,641.86 : 936,107,160.48 = 392,372,289.30 : x
  2. Step 2: Convert to fraction form
    678,533,641.86/936,107,160.48 = 392,372,289.30/x
  3. Step 3: Cross multiply
    678,533,641.86x = 936,107,160.48 × 392,372,289.30
  4. Step 4: Simplify right side
    678,533,641.86x = 367,302,509,587,660,096
  5. Step 5: Solve for x
    x = 367,302,509,587,660,096/678,533,641.86
  6. Step 6: Final answer
    x = 541,318,052.53

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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.