Home / 912,070,380.72-1,258,623,405.45-494,373,697.95

Finding the Fourth Proportional to 912,070,380.72, 1,258,623,405.45 and 494,373,697.95

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Solution

The fourth proportional to 912,070,380.72, 1,258,623,405.45 and 494,373,697.95 is: 682,217,425.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,070,380.72 : 1,258,623,405.45 = 494,373,697.95 : x
  2. Step 2: Convert to fraction form
    912,070,380.72/1,258,623,405.45 = 494,373,697.95/x
  3. Step 3: Cross multiply
    912,070,380.72x = 1,258,623,405.45 × 494,373,697.95
  4. Step 4: Simplify right side
    912,070,380.72x = 622,230,307,278,738,688
  5. Step 5: Solve for x
    x = 622,230,307,278,738,688/912,070,380.72
  6. Step 6: Final answer
    x = 682,217,425.80

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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.