Home / 815,301.86-1,221,771.53-459,558.77

Finding the Fourth Proportional to 815,301.86, 1,221,771.53 and 459,558.77

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Solution

The fourth proportional to 815,301.86, 1,221,771.53 and 459,558.77 is: 688,672.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,301.86 : 1,221,771.53 = 459,558.77 : x
  2. Step 2: Convert to fraction form
    815,301.86/1,221,771.53 = 459,558.77/x
  3. Step 3: Cross multiply
    815,301.86x = 1,221,771.53 × 459,558.77
  4. Step 4: Simplify right side
    815,301.86x = 561,475,816,587.86
  5. Step 5: Solve for x
    x = 561,475,816,587.86/815,301.86
  6. Step 6: Final answer
    x = 688,672.32

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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.