Home / 766,520,043.19-1,149,789,284.96-213,788,815.52

Finding the Fourth Proportional to 766,520,043.19, 1,149,789,284.96 and 213,788,815.52

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Solution

The fourth proportional to 766,520,043.19, 1,149,789,284.96 and 213,788,815.52 is: 320,685,794.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,520,043.19 : 1,149,789,284.96 = 213,788,815.52 : x
  2. Step 2: Convert to fraction form
    766,520,043.19/1,149,789,284.96 = 213,788,815.52/x
  3. Step 3: Cross multiply
    766,520,043.19x = 1,149,789,284.96 × 213,788,815.52
  4. Step 4: Simplify right side
    766,520,043.19x = 245,812,089,329,186,176
  5. Step 5: Solve for x
    x = 245,812,089,329,186,176/766,520,043.19
  6. Step 6: Final answer
    x = 320,685,794.86

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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.