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Finding the Fourth Proportional to 700,020.80, 1,050,808.80 and 434,081.60

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Solution

The fourth proportional to 700,020.80, 1,050,808.80 and 434,081.60 is: 651,604.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,020.80 : 1,050,808.80 = 434,081.60 : x
  2. Step 2: Convert to fraction form
    700,020.80/1,050,808.80 = 434,081.60/x
  3. Step 3: Cross multiply
    700,020.80x = 1,050,808.80 × 434,081.60
  4. Step 4: Simplify right side
    700,020.80x = 456,136,765,198.08
  5. Step 5: Solve for x
    x = 456,136,765,198.08/700,020.80
  6. Step 6: Final answer
    x = 651,604.59

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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.