Home / 815,827,438.80-1,223,739,627.12-255,632,151.60

Finding the Fourth Proportional to 815,827,438.80, 1,223,739,627.12 and 255,632,151.60

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Solution

The fourth proportional to 815,827,438.80, 1,223,739,627.12 and 255,632,151.60 is: 383,447,747.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,827,438.80 : 1,223,739,627.12 = 255,632,151.60 : x
  2. Step 2: Convert to fraction form
    815,827,438.80/1,223,739,627.12 = 255,632,151.60/x
  3. Step 3: Cross multiply
    815,827,438.80x = 1,223,739,627.12 × 255,632,151.60
  4. Step 4: Simplify right side
    815,827,438.80x = 312,827,193,878,867,264
  5. Step 5: Solve for x
    x = 312,827,193,878,867,264/815,827,438.80
  6. Step 6: Final answer
    x = 383,447,747.65

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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.