Home / 1,187,580-1,638,860.40-651,036

Finding the Fourth Proportional to 1,187,580, 1,638,860.40 and 651,036

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Solution

The fourth proportional to 1,187,580, 1,638,860.40 and 651,036 is: 898,429.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,580 : 1,638,860.40 = 651,036 : x
  2. Step 2: Convert to fraction form
    1,187,580/1,638,860.40 = 651,036/x
  3. Step 3: Cross multiply
    1,187,580x = 1,638,860.40 × 651,036
  4. Step 4: Simplify right side
    1,187,580x = 1,066,957,119,374.40
  5. Step 5: Solve for x
    x = 1,066,957,119,374.40/1,187,580
  6. Step 6: Final answer
    x = 898,429.68

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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.