Home / 1,188,004.60-1,782,006.90-389,312.20

Finding the Fourth Proportional to 1,188,004.60, 1,782,006.90 and 389,312.20

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Solution

The fourth proportional to 1,188,004.60, 1,782,006.90 and 389,312.20 is: 583,968.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,004.60 : 1,782,006.90 = 389,312.20 : x
  2. Step 2: Convert to fraction form
    1,188,004.60/1,782,006.90 = 389,312.20/x
  3. Step 3: Cross multiply
    1,188,004.60x = 1,782,006.90 × 389,312.20
  4. Step 4: Simplify right side
    1,188,004.60x = 693,757,026,654.18
  5. Step 5: Solve for x
    x = 693,757,026,654.18/1,188,004.60
  6. Step 6: Final answer
    x = 583,968.30

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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.