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Finding the Fourth Proportional to 406,984.80, 609,310.80 and 395,320.80

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Solution

The fourth proportional to 406,984.80, 609,310.80 and 395,320.80 is: 591,848.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,984.80 : 609,310.80 = 395,320.80 : x
  2. Step 2: Convert to fraction form
    406,984.80/609,310.80 = 395,320.80/x
  3. Step 3: Cross multiply
    406,984.80x = 609,310.80 × 395,320.80
  4. Step 4: Simplify right side
    406,984.80x = 240,873,232,904.64
  5. Step 5: Solve for x
    x = 240,873,232,904.64/406,984.80
  6. Step 6: Final answer
    x = 591,848.23

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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.