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Finding the Fourth Proportional to 860,175.60, 1,290,263.40 and 807,687.60

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Solution

The fourth proportional to 860,175.60, 1,290,263.40 and 807,687.60 is: 1,211,531.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,175.60 : 1,290,263.40 = 807,687.60 : x
  2. Step 2: Convert to fraction form
    860,175.60/1,290,263.40 = 807,687.60/x
  3. Step 3: Cross multiply
    860,175.60x = 1,290,263.40 × 807,687.60
  4. Step 4: Simplify right side
    860,175.60x = 1,042,129,748,913.84
  5. Step 5: Solve for x
    x = 1,042,129,748,913.84/860,175.60
  6. Step 6: Final answer
    x = 1,211,531.40

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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.