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Finding the Fourth Proportional to 616,009.80, 860,314.20 and 616,009.80

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Solution

The fourth proportional to 616,009.80, 860,314.20 and 616,009.80 is: 860,314.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,009.80 : 860,314.20 = 616,009.80 : x
  2. Step 2: Convert to fraction form
    616,009.80/860,314.20 = 616,009.80/x
  3. Step 3: Cross multiply
    616,009.80x = 860,314.20 × 616,009.80
  4. Step 4: Simplify right side
    616,009.80x = 529,961,978,279.16
  5. Step 5: Solve for x
    x = 529,961,978,279.16/616,009.80
  6. Step 6: Final answer
    x = 860,314.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.