Home / 1,186,313.20-1,637,109.72-642,447.32

Finding the Fourth Proportional to 1,186,313.20, 1,637,109.72 and 642,447.32

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Solution

The fourth proportional to 1,186,313.20, 1,637,109.72 and 642,447.32 is: 886,575.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,313.20 : 1,637,109.72 = 642,447.32 : x
  2. Step 2: Convert to fraction form
    1,186,313.20/1,637,109.72 = 642,447.32/x
  3. Step 3: Cross multiply
    1,186,313.20x = 1,637,109.72 × 642,447.32
  4. Step 4: Simplify right side
    1,186,313.20x = 1,051,756,743,974.40
  5. Step 5: Solve for x
    x = 1,051,756,743,974.40/1,186,313.20
  6. Step 6: Final answer
    x = 886,575.94

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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.