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Finding the Fourth Proportional to 777,980.40, 1,166,970.60 and 773,065.20

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Solution

The fourth proportional to 777,980.40, 1,166,970.60 and 773,065.20 is: 1,159,597.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,980.40 : 1,166,970.60 = 773,065.20 : x
  2. Step 2: Convert to fraction form
    777,980.40/1,166,970.60 = 773,065.20/x
  3. Step 3: Cross multiply
    777,980.40x = 1,166,970.60 × 773,065.20
  4. Step 4: Simplify right side
    777,980.40x = 902,144,360,283.12
  5. Step 5: Solve for x
    x = 902,144,360,283.12/777,980.40
  6. Step 6: Final answer
    x = 1,159,597.80

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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.