Home / 1,399,790.77-1,931,711.73-819,125.53

Finding the Fourth Proportional to 1,399,790.77, 1,931,711.73 and 819,125.53

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Solution

The fourth proportional to 1,399,790.77, 1,931,711.73 and 819,125.53 is: 1,130,393.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399,790.77 : 1,931,711.73 = 819,125.53 : x
  2. Step 2: Convert to fraction form
    1,399,790.77/1,931,711.73 = 819,125.53/x
  3. Step 3: Cross multiply
    1,399,790.77x = 1,931,711.73 × 819,125.53
  4. Step 4: Simplify right side
    1,399,790.77x = 1,582,314,394,643.47
  5. Step 5: Solve for x
    x = 1,582,314,394,643.47/1,399,790.77
  6. Step 6: Final answer
    x = 1,130,393.50

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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.