Home / 851,284,008.80-1,276,422,128.40-443,137,320.80

Finding the Fourth Proportional to 851,284,008.80, 1,276,422,128.40 and 443,137,320.80

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Solution

The fourth proportional to 851,284,008.80, 1,276,422,128.40 and 443,137,320.80 is: 664,443,683.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,284,008.80 : 1,276,422,128.40 = 443,137,320.80 : x
  2. Step 2: Convert to fraction form
    851,284,008.80/1,276,422,128.40 = 443,137,320.80/x
  3. Step 3: Cross multiply
    851,284,008.80x = 1,276,422,128.40 × 443,137,320.80
  4. Step 4: Simplify right side
    851,284,008.80x = 565,630,282,189,009,664
  5. Step 5: Solve for x
    x = 565,630,282,189,009,664/851,284,008.80
  6. Step 6: Final answer
    x = 664,443,683.12

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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.