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Finding the Fourth Proportional to 525,982,494.80, 788,973,742.20 and 219,494,565.20

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Solution

The fourth proportional to 525,982,494.80, 788,973,742.20 and 219,494,565.20 is: 329,241,847.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,982,494.80 : 788,973,742.20 = 219,494,565.20 : x
  2. Step 2: Convert to fraction form
    525,982,494.80/788,973,742.20 = 219,494,565.20/x
  3. Step 3: Cross multiply
    525,982,494.80x = 788,973,742.20 × 219,494,565.20
  4. Step 4: Simplify right side
    525,982,494.80x = 173,175,448,498,405,888
  5. Step 5: Solve for x
    x = 173,175,448,498,405,888/525,982,494.80
  6. Step 6: Final answer
    x = 329,241,847.80

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Double scale
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Similar ratio
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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.