Home / 639,551.10-958,242.70-386,299.52

Finding the Fourth Proportional to 639,551.10, 958,242.70 and 386,299.52

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Solution

The fourth proportional to 639,551.10, 958,242.70 and 386,299.52 is: 578,794.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,551.10 : 958,242.70 = 386,299.52 : x
  2. Step 2: Convert to fraction form
    639,551.10/958,242.70 = 386,299.52/x
  3. Step 3: Cross multiply
    639,551.10x = 958,242.70 × 386,299.52
  4. Step 4: Simplify right side
    639,551.10x = 370,168,695,053.50
  5. Step 5: Solve for x
    x = 370,168,695,053.50/639,551.10
  6. Step 6: Final answer
    x = 578,794.56

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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.