Home / 436,280.20-654,420.30-258,987.40

Finding the Fourth Proportional to 436,280.20, 654,420.30 and 258,987.40

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Solution

The fourth proportional to 436,280.20, 654,420.30 and 258,987.40 is: 388,481.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,280.20 : 654,420.30 = 258,987.40 : x
  2. Step 2: Convert to fraction form
    436,280.20/654,420.30 = 258,987.40/x
  3. Step 3: Cross multiply
    436,280.20x = 654,420.30 × 258,987.40
  4. Step 4: Simplify right side
    436,280.20x = 169,486,612,004.22
  5. Step 5: Solve for x
    x = 169,486,612,004.22/436,280.20
  6. Step 6: Final answer
    x = 388,481.10

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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.