Home / 671,999.40-1,007,999.10-388,564.20

Finding the Fourth Proportional to 671,999.40, 1,007,999.10 and 388,564.20

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Solution

The fourth proportional to 671,999.40, 1,007,999.10 and 388,564.20 is: 582,846.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,999.40 : 1,007,999.10 = 388,564.20 : x
  2. Step 2: Convert to fraction form
    671,999.40/1,007,999.10 = 388,564.20/x
  3. Step 3: Cross multiply
    671,999.40x = 1,007,999.10 × 388,564.20
  4. Step 4: Simplify right side
    671,999.40x = 391,672,363,892.22
  5. Step 5: Solve for x
    x = 391,672,363,892.22/671,999.40
  6. Step 6: Final answer
    x = 582,846.30

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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.