Home / 326,668,652,083.20-490,002,978,124.80-78,515,465,779.20

Finding the Fourth Proportional to 326,668,652,083.20, 490,002,978,124.80 and 78,515,465,779.20

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Solution

The fourth proportional to 326,668,652,083.20, 490,002,978,124.80 and 78,515,465,779.20 is: 117,773,198,668.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,668,652,083.20 : 490,002,978,124.80 = 78,515,465,779.20 : x
  2. Step 2: Convert to fraction form
    326,668,652,083.20/490,002,978,124.80 = 78,515,465,779.20/x
  3. Step 3: Cross multiply
    326,668,652,083.20x = 490,002,978,124.80 × 78,515,465,779.20
  4. Step 4: Simplify right side
    326,668,652,083.20x = 38,472,812,060,663,816,912,896
  5. Step 5: Solve for x
    x = 38,472,812,060,663,816,912,896/326,668,652,083.20
  6. Step 6: Final answer
    x = 117,773,198,668.80

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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.