Home / 780,023,882.10-1,170,035,823.15-320,291,987.70

Finding the Fourth Proportional to 780,023,882.10, 1,170,035,823.15 and 320,291,987.70

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Solution

The fourth proportional to 780,023,882.10, 1,170,035,823.15 and 320,291,987.70 is: 480,437,981.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,023,882.10 : 1,170,035,823.15 = 320,291,987.70 : x
  2. Step 2: Convert to fraction form
    780,023,882.10/1,170,035,823.15 = 320,291,987.70/x
  3. Step 3: Cross multiply
    780,023,882.10x = 1,170,035,823.15 × 320,291,987.70
  4. Step 4: Simplify right side
    780,023,882.10x = 374,753,099,476,919,168
  5. Step 5: Solve for x
    x = 374,753,099,476,919,168/780,023,882.10
  6. Step 6: Final answer
    x = 480,437,981.55

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Double scale
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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.