Home / 926,321.80-1,389,612.30-393,838.60

Finding the Fourth Proportional to 926,321.80, 1,389,612.30 and 393,838.60

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Solution

The fourth proportional to 926,321.80, 1,389,612.30 and 393,838.60 is: 590,813.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,321.80 : 1,389,612.30 = 393,838.60 : x
  2. Step 2: Convert to fraction form
    926,321.80/1,389,612.30 = 393,838.60/x
  3. Step 3: Cross multiply
    926,321.80x = 1,389,612.30 × 393,838.60
  4. Step 4: Simplify right side
    926,321.80x = 547,282,962,774.78
  5. Step 5: Solve for x
    x = 547,282,962,774.78/926,321.80
  6. Step 6: Final answer
    x = 590,813.00

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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.