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Finding the Fourth Proportional to 815,302.86, 1,221,773.03 and 459,559.77

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Solution

The fourth proportional to 815,302.86, 1,221,773.03 and 459,559.77 is: 688,673.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,302.86 : 1,221,773.03 = 459,559.77 : x
  2. Step 2: Convert to fraction form
    815,302.86/1,221,773.03 = 459,559.77/x
  3. Step 3: Cross multiply
    815,302.86x = 1,221,773.03 × 459,559.77
  4. Step 4: Simplify right side
    815,302.86x = 561,477,732,659.00
  5. Step 5: Solve for x
    x = 561,477,732,659.00/815,302.86
  6. Step 6: Final answer
    x = 688,673.82

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1.5x scale

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.