Home / 990,657.90-1,485,002.70-484,804.80

Finding the Fourth Proportional to 990,657.90, 1,485,002.70 and 484,804.80

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Solution

The fourth proportional to 990,657.90, 1,485,002.70 and 484,804.80 is: 726,725.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,657.90 : 1,485,002.70 = 484,804.80 : x
  2. Step 2: Convert to fraction form
    990,657.90/1,485,002.70 = 484,804.80/x
  3. Step 3: Cross multiply
    990,657.90x = 1,485,002.70 × 484,804.80
  4. Step 4: Simplify right side
    990,657.90x = 719,936,436,972.96
  5. Step 5: Solve for x
    x = 719,936,436,972.96/990,657.90
  6. Step 6: Final answer
    x = 726,725.58

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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.