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Finding the Fourth Proportional to 671,999.40, 1,007,999.10 and 570,522.60

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Solution

The fourth proportional to 671,999.40, 1,007,999.10 and 570,522.60 is: 855,783.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,999.40 : 1,007,999.10 = 570,522.60 : x
  2. Step 2: Convert to fraction form
    671,999.40/1,007,999.10 = 570,522.60/x
  3. Step 3: Cross multiply
    671,999.40x = 1,007,999.10 × 570,522.60
  4. Step 4: Simplify right side
    671,999.40x = 575,086,267,329.66
  5. Step 5: Solve for x
    x = 575,086,267,329.66/671,999.40
  6. Step 6: Final answer
    x = 855,783.90

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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.