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Finding the Fourth Proportional to 620,858.44, 856,106.58 and 419,304.52

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Solution

The fourth proportional to 620,858.44, 856,106.58 and 419,304.52 is: 578,182.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,858.44 : 856,106.58 = 419,304.52 : x
  2. Step 2: Convert to fraction form
    620,858.44/856,106.58 = 419,304.52/x
  3. Step 3: Cross multiply
    620,858.44x = 856,106.58 × 419,304.52
  4. Step 4: Simplify right side
    620,858.44x = 358,969,358,595.74
  5. Step 5: Solve for x
    x = 358,969,358,595.74/620,858.44
  6. Step 6: Final answer
    x = 578,182.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.