Home / 1,137,981.60-1,570,402.80-628,650.72

Finding the Fourth Proportional to 1,137,981.60, 1,570,402.80 and 628,650.72

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Solution

The fourth proportional to 1,137,981.60, 1,570,402.80 and 628,650.72 is: 867,531.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,137,981.60 : 1,570,402.80 = 628,650.72 : x
  2. Step 2: Convert to fraction form
    1,137,981.60/1,570,402.80 = 628,650.72/x
  3. Step 3: Cross multiply
    1,137,981.60x = 1,570,402.80 × 628,650.72
  4. Step 4: Simplify right side
    1,137,981.60x = 987,234,850,910.02
  5. Step 5: Solve for x
    x = 987,234,850,910.02/1,137,981.60
  6. Step 6: Final answer
    x = 867,531.47

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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.