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Finding the Fourth Proportional to 406,504.80, 609,757.20 and 126,050.40

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Solution

The fourth proportional to 406,504.80, 609,757.20 and 126,050.40 is: 189,075.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,504.80 : 609,757.20 = 126,050.40 : x
  2. Step 2: Convert to fraction form
    406,504.80/609,757.20 = 126,050.40/x
  3. Step 3: Cross multiply
    406,504.80x = 609,757.20 × 126,050.40
  4. Step 4: Simplify right side
    406,504.80x = 76,860,138,962.88
  5. Step 5: Solve for x
    x = 76,860,138,962.88/406,504.80
  6. Step 6: Final answer
    x = 189,075.60

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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.