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Finding the Fourth Proportional to 439,776.40, 659,664.60 and 435,110.80

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Solution

The fourth proportional to 439,776.40, 659,664.60 and 435,110.80 is: 652,666.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,776.40 : 659,664.60 = 435,110.80 : x
  2. Step 2: Convert to fraction form
    439,776.40/659,664.60 = 435,110.80/x
  3. Step 3: Cross multiply
    439,776.40x = 659,664.60 × 435,110.80
  4. Step 4: Simplify right side
    439,776.40x = 287,027,191,837.68
  5. Step 5: Solve for x
    x = 287,027,191,837.68/439,776.40
  6. Step 6: Final answer
    x = 652,666.20

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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.