Home / 853,421.86-1,177,755.96-490,845.27

Finding the Fourth Proportional to 853,421.86, 1,177,755.96 and 490,845.27

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Solution

The fourth proportional to 853,421.86, 1,177,755.96 and 490,845.27 is: 677,385.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,421.86 : 1,177,755.96 = 490,845.27 : x
  2. Step 2: Convert to fraction form
    853,421.86/1,177,755.96 = 490,845.27/x
  3. Step 3: Cross multiply
    853,421.86x = 1,177,755.96 × 490,845.27
  4. Step 4: Simplify right side
    853,421.86x = 578,095,942,180.31
  5. Step 5: Solve for x
    x = 578,095,942,180.31/853,421.86
  6. Step 6: Final answer
    x = 677,385.91

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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.