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Finding the Fourth Proportional to 405,003.60, 607,505.40 and 271,159.20

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Solution

The fourth proportional to 405,003.60, 607,505.40 and 271,159.20 is: 406,738.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,003.60 : 607,505.40 = 271,159.20 : x
  2. Step 2: Convert to fraction form
    405,003.60/607,505.40 = 271,159.20/x
  3. Step 3: Cross multiply
    405,003.60x = 607,505.40 × 271,159.20
  4. Step 4: Simplify right side
    405,003.60x = 164,730,678,259.68
  5. Step 5: Solve for x
    x = 164,730,678,259.68/405,003.60
  6. Step 6: Final answer
    x = 406,738.80

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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.