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Finding the Fourth Proportional to 788,443.60, 1,182,751.80 and 763,560.40

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Solution

The fourth proportional to 788,443.60, 1,182,751.80 and 763,560.40 is: 1,145,424.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,443.60 : 1,182,751.80 = 763,560.40 : x
  2. Step 2: Convert to fraction form
    788,443.60/1,182,751.80 = 763,560.40/x
  3. Step 3: Cross multiply
    788,443.60x = 1,182,751.80 × 763,560.40
  4. Step 4: Simplify right side
    788,443.60x = 903,102,437,508.72
  5. Step 5: Solve for x
    x = 903,102,437,508.72/788,443.60
  6. Step 6: Final answer
    x = 1,145,424.27

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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.