Home / 639,107.84-881,968.16-352,627.90

Finding the Fourth Proportional to 639,107.84, 881,968.16 and 352,627.90

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Solution

The fourth proportional to 639,107.84, 881,968.16 and 352,627.90 is: 486,626.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,107.84 : 881,968.16 = 352,627.90 : x
  2. Step 2: Convert to fraction form
    639,107.84/881,968.16 = 352,627.90/x
  3. Step 3: Cross multiply
    639,107.84x = 881,968.16 × 352,627.90
  4. Step 4: Simplify right side
    639,107.84x = 311,006,578,804.31
  5. Step 5: Solve for x
    x = 311,006,578,804.31/639,107.84
  6. Step 6: Final answer
    x = 486,626.13

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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.