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Finding the Fourth Proportional to 405,004.80, 607,507.20 and 359,515.20

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Solution

The fourth proportional to 405,004.80, 607,507.20 and 359,515.20 is: 539,272.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,004.80 : 607,507.20 = 359,515.20 : x
  2. Step 2: Convert to fraction form
    405,004.80/607,507.20 = 359,515.20/x
  3. Step 3: Cross multiply
    405,004.80x = 607,507.20 × 359,515.20
  4. Step 4: Simplify right side
    405,004.80x = 218,408,072,509.44
  5. Step 5: Solve for x
    x = 218,408,072,509.44/405,004.80
  6. Step 6: Final answer
    x = 539,272.80

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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.