Home / 1,221,685.40-1,833,242.70-511,653.80

Finding the Fourth Proportional to 1,221,685.40, 1,833,242.70 and 511,653.80

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Solution

The fourth proportional to 1,221,685.40, 1,833,242.70 and 511,653.80 is: 767,779.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,685.40 : 1,833,242.70 = 511,653.80 : x
  2. Step 2: Convert to fraction form
    1,221,685.40/1,833,242.70 = 511,653.80/x
  3. Step 3: Cross multiply
    1,221,685.40x = 1,833,242.70 × 511,653.80
  4. Step 4: Simplify right side
    1,221,685.40x = 937,985,593,777.26
  5. Step 5: Solve for x
    x = 937,985,593,777.26/1,221,685.40
  6. Step 6: Final answer
    x = 767,779.98

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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.