Home / 818,987.69-1,130,153.30-451,448.72

Finding the Fourth Proportional to 818,987.69, 1,130,153.30 and 451,448.72

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Solution

The fourth proportional to 818,987.69, 1,130,153.30 and 451,448.72 is: 622,971.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,987.69 : 1,130,153.30 = 451,448.72 : x
  2. Step 2: Convert to fraction form
    818,987.69/1,130,153.30 = 451,448.72/x
  3. Step 3: Cross multiply
    818,987.69x = 1,130,153.30 × 451,448.72
  4. Step 4: Simplify right side
    818,987.69x = 510,206,258,431.53
  5. Step 5: Solve for x
    x = 510,206,258,431.53/818,987.69
  6. Step 6: Final answer
    x = 622,971.83

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Double scale
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1.5x scale

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.