Home / 840,928.80-1,161,447.12-612,503.76

Finding the Fourth Proportional to 840,928.80, 1,161,447.12 and 612,503.76

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Solution

The fourth proportional to 840,928.80, 1,161,447.12 and 612,503.76 is: 845,958.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,928.80 : 1,161,447.12 = 612,503.76 : x
  2. Step 2: Convert to fraction form
    840,928.80/1,161,447.12 = 612,503.76/x
  3. Step 3: Cross multiply
    840,928.80x = 1,161,447.12 × 612,503.76
  4. Step 4: Simplify right side
    840,928.80x = 711,390,728,041.17
  5. Step 5: Solve for x
    x = 711,390,728,041.17/840,928.80
  6. Step 6: Final answer
    x = 845,958.34

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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.