Home / 1,918,534.53-2,878,086.12-638,724

Finding the Fourth Proportional to 1,918,534.53, 2,878,086.12 and 638,724

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Solution

The fourth proportional to 1,918,534.53, 2,878,086.12 and 638,724 is: 958,180.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918,534.53 : 2,878,086.12 = 638,724 : x
  2. Step 2: Convert to fraction form
    1,918,534.53/2,878,086.12 = 638,724/x
  3. Step 3: Cross multiply
    1,918,534.53x = 2,878,086.12 × 638,724
  4. Step 4: Simplify right side
    1,918,534.53x = 1,838,302,678,910.88
  5. Step 5: Solve for x
    x = 1,838,302,678,910.88/1,918,534.53
  6. Step 6: Final answer
    x = 958,180.66

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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.