Home / 1,315,268.64-1,815,063.12-711,643.68

Finding the Fourth Proportional to 1,315,268.64, 1,815,063.12 and 711,643.68

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Solution

The fourth proportional to 1,315,268.64, 1,815,063.12 and 711,643.68 is: 982,064.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,268.64 : 1,815,063.12 = 711,643.68 : x
  2. Step 2: Convert to fraction form
    1,315,268.64/1,815,063.12 = 711,643.68/x
  3. Step 3: Cross multiply
    1,315,268.64x = 1,815,063.12 × 711,643.68
  4. Step 4: Simplify right side
    1,315,268.64x = 1,291,678,198,149.08
  5. Step 5: Solve for x
    x = 1,291,678,198,149.08/1,315,268.64
  6. Step 6: Final answer
    x = 982,064.16

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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.