Home / 768,004.20-1,152,006.30-390,090.60

Finding the Fourth Proportional to 768,004.20, 1,152,006.30 and 390,090.60

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Solution

The fourth proportional to 768,004.20, 1,152,006.30 and 390,090.60 is: 585,135.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,004.20 : 1,152,006.30 = 390,090.60 : x
  2. Step 2: Convert to fraction form
    768,004.20/1,152,006.30 = 390,090.60/x
  3. Step 3: Cross multiply
    768,004.20x = 1,152,006.30 × 390,090.60
  4. Step 4: Simplify right side
    768,004.20x = 449,386,828,770.78
  5. Step 5: Solve for x
    x = 449,386,828,770.78/768,004.20
  6. Step 6: Final answer
    x = 585,135.90

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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.