Home / 1,369,709.80-1,886,280.42-987,130.60

Finding the Fourth Proportional to 1,369,709.80, 1,886,280.42 and 987,130.60

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Solution

The fourth proportional to 1,369,709.80, 1,886,280.42 and 987,130.60 is: 1,359,415.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,369,709.80 : 1,886,280.42 = 987,130.60 : x
  2. Step 2: Convert to fraction form
    1,369,709.80/1,886,280.42 = 987,130.60/x
  3. Step 3: Cross multiply
    1,369,709.80x = 1,886,280.42 × 987,130.60
  4. Step 4: Simplify right side
    1,369,709.80x = 1,862,005,122,762.85
  5. Step 5: Solve for x
    x = 1,862,005,122,762.85/1,369,709.80
  6. Step 6: Final answer
    x = 1,359,415.78

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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.