Home / 647,022,187.20-970,533,280.80-429,343,953.60

Finding the Fourth Proportional to 647,022,187.20, 970,533,280.80 and 429,343,953.60

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Solution

The fourth proportional to 647,022,187.20, 970,533,280.80 and 429,343,953.60 is: 644,015,930.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,022,187.20 : 970,533,280.80 = 429,343,953.60 : x
  2. Step 2: Convert to fraction form
    647,022,187.20/970,533,280.80 = 429,343,953.60/x
  3. Step 3: Cross multiply
    647,022,187.20x = 970,533,280.80 × 429,343,953.60
  4. Step 4: Simplify right side
    647,022,187.20x = 416,692,595,879,050,944
  5. Step 5: Solve for x
    x = 416,692,595,879,050,944/647,022,187.20
  6. Step 6: Final answer
    x = 644,015,930.40

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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.