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Finding the Fourth Proportional to 828,779.80, 1,242,003.30 and 613,870.60

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Solution

The fourth proportional to 828,779.80, 1,242,003.30 and 613,870.60 is: 919,941.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,779.80 : 1,242,003.30 = 613,870.60 : x
  2. Step 2: Convert to fraction form
    828,779.80/1,242,003.30 = 613,870.60/x
  3. Step 3: Cross multiply
    828,779.80x = 1,242,003.30 × 613,870.60
  4. Step 4: Simplify right side
    828,779.80x = 762,429,310,972.98
  5. Step 5: Solve for x
    x = 762,429,310,972.98/828,779.80
  6. Step 6: Final answer
    x = 919,941.96

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1.5x scale

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.