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Finding the Fourth Proportional to 439,770.30, 659,655.45 and 400,404.30

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Solution

The fourth proportional to 439,770.30, 659,655.45 and 400,404.30 is: 600,606.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,770.30 : 659,655.45 = 400,404.30 : x
  2. Step 2: Convert to fraction form
    439,770.30/659,655.45 = 400,404.30/x
  3. Step 3: Cross multiply
    439,770.30x = 659,655.45 × 400,404.30
  4. Step 4: Simplify right side
    439,770.30x = 264,128,878,698.44
  5. Step 5: Solve for x
    x = 264,128,878,698.44/439,770.30
  6. Step 6: Final answer
    x = 600,606.45

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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.