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Finding the Fourth Proportional to 550,448.40, 825,672.60 and 425,878.80

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Solution

The fourth proportional to 550,448.40, 825,672.60 and 425,878.80 is: 638,818.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,448.40 : 825,672.60 = 425,878.80 : x
  2. Step 2: Convert to fraction form
    550,448.40/825,672.60 = 425,878.80/x
  3. Step 3: Cross multiply
    550,448.40x = 825,672.60 × 425,878.80
  4. Step 4: Simplify right side
    550,448.40x = 351,636,456,080.88
  5. Step 5: Solve for x
    x = 351,636,456,080.88/550,448.40
  6. Step 6: Final answer
    x = 638,818.20

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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.