Home / 1,247,384.40-1,871,119.80-394,465.20

Finding the Fourth Proportional to 1,247,384.40, 1,871,119.80 and 394,465.20

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Solution

The fourth proportional to 1,247,384.40, 1,871,119.80 and 394,465.20 is: 591,711.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,384.40 : 1,871,119.80 = 394,465.20 : x
  2. Step 2: Convert to fraction form
    1,247,384.40/1,871,119.80 = 394,465.20/x
  3. Step 3: Cross multiply
    1,247,384.40x = 1,871,119.80 × 394,465.20
  4. Step 4: Simplify right side
    1,247,384.40x = 738,091,646,130.96
  5. Step 5: Solve for x
    x = 738,091,646,130.96/1,247,384.40
  6. Step 6: Final answer
    x = 591,711.46

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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.