Home / 767,815.20-1,152,241.20-430,855.20

Finding the Fourth Proportional to 767,815.20, 1,152,241.20 and 430,855.20

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Solution

The fourth proportional to 767,815.20, 1,152,241.20 and 430,855.20 is: 646,573.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,815.20 : 1,152,241.20 = 430,855.20 : x
  2. Step 2: Convert to fraction form
    767,815.20/1,152,241.20 = 430,855.20/x
  3. Step 3: Cross multiply
    767,815.20x = 1,152,241.20 × 430,855.20
  4. Step 4: Simplify right side
    767,815.20x = 496,449,112,674.24
  5. Step 5: Solve for x
    x = 496,449,112,674.24/767,815.20
  6. Step 6: Final answer
    x = 646,573.70

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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.