Home / 1,355,984.86-1,871,122.83-812,106.70

Finding the Fourth Proportional to 1,355,984.86, 1,871,122.83 and 812,106.70

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Solution

The fourth proportional to 1,355,984.86, 1,871,122.83 and 812,106.70 is: 1,120,625.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355,984.86 : 1,871,122.83 = 812,106.70 : x
  2. Step 2: Convert to fraction form
    1,355,984.86/1,871,122.83 = 812,106.70/x
  3. Step 3: Cross multiply
    1,355,984.86x = 1,871,122.83 × 812,106.70
  4. Step 4: Simplify right side
    1,355,984.86x = 1,519,551,386,765.96
  5. Step 5: Solve for x
    x = 1,519,551,386,765.96/1,355,984.86
  6. Step 6: Final answer
    x = 1,120,625.63

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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.