Home / 985,503.84-1,360,212.96-640,739.76

Finding the Fourth Proportional to 985,503.84, 1,360,212.96 and 640,739.76

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Solution

The fourth proportional to 985,503.84, 1,360,212.96 and 640,739.76 is: 884,362.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,503.84 : 1,360,212.96 = 640,739.76 : x
  2. Step 2: Convert to fraction form
    985,503.84/1,360,212.96 = 640,739.76/x
  3. Step 3: Cross multiply
    985,503.84x = 1,360,212.96 × 640,739.76
  4. Step 4: Simplify right side
    985,503.84x = 871,542,525,539.29
  5. Step 5: Solve for x
    x = 871,542,525,539.29/985,503.84
  6. Step 6: Final answer
    x = 884,362.38

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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.