Home / 1,318,933.80-1,820,140.20-715,321.80

Finding the Fourth Proportional to 1,318,933.80, 1,820,140.20 and 715,321.80

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Solution

The fourth proportional to 1,318,933.80, 1,820,140.20 and 715,321.80 is: 987,150.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,933.80 : 1,820,140.20 = 715,321.80 : x
  2. Step 2: Convert to fraction form
    1,318,933.80/1,820,140.20 = 715,321.80/x
  3. Step 3: Cross multiply
    1,318,933.80x = 1,820,140.20 × 715,321.80
  4. Step 4: Simplify right side
    1,318,933.80x = 1,301,985,964,116.36
  5. Step 5: Solve for x
    x = 1,301,985,964,116.36/1,318,933.80
  6. Step 6: Final answer
    x = 987,150.35

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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.