Home / 908,336,189.49-1,253,504,445.89-490,648,478.90

Finding the Fourth Proportional to 908,336,189.49, 1,253,504,445.89 and 490,648,478.90

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Solution

The fourth proportional to 908,336,189.49, 1,253,504,445.89 and 490,648,478.90 is: 677,095,173.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,336,189.49 : 1,253,504,445.89 = 490,648,478.90 : x
  2. Step 2: Convert to fraction form
    908,336,189.49/1,253,504,445.89 = 490,648,478.90/x
  3. Step 3: Cross multiply
    908,336,189.49x = 1,253,504,445.89 × 490,648,478.90
  4. Step 4: Simplify right side
    908,336,189.49x = 615,030,049,661,595,008
  5. Step 5: Solve for x
    x = 615,030,049,661,595,008/908,336,189.49
  6. Step 6: Final answer
    x = 677,095,173.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.