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Finding the Fourth Proportional to 439,642.20, 659,852.10 and 376,656.60

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Solution

The fourth proportional to 439,642.20, 659,852.10 and 376,656.60 is: 565,318.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,642.20 : 659,852.10 = 376,656.60 : x
  2. Step 2: Convert to fraction form
    439,642.20/659,852.10 = 376,656.60/x
  3. Step 3: Cross multiply
    439,642.20x = 659,852.10 × 376,656.60
  4. Step 4: Simplify right side
    439,642.20x = 248,537,648,488.86
  5. Step 5: Solve for x
    x = 248,537,648,488.86/439,642.20
  6. Step 6: Final answer
    x = 565,318.00

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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.