Home / 783,999.60-1,175,999.40-518,578.80

Finding the Fourth Proportional to 783,999.60, 1,175,999.40 and 518,578.80

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Solution

The fourth proportional to 783,999.60, 1,175,999.40 and 518,578.80 is: 777,868.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,999.60 : 1,175,999.40 = 518,578.80 : x
  2. Step 2: Convert to fraction form
    783,999.60/1,175,999.40 = 518,578.80/x
  3. Step 3: Cross multiply
    783,999.60x = 1,175,999.40 × 518,578.80
  4. Step 4: Simplify right side
    783,999.60x = 609,848,357,652.72
  5. Step 5: Solve for x
    x = 609,848,357,652.72/783,999.60
  6. Step 6: Final answer
    x = 777,868.20

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1.5x scale

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.