Home / 256,406,520.20-384,609,780.30-74,659,627.40

Finding the Fourth Proportional to 256,406,520.20, 384,609,780.30 and 74,659,627.40

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Solution

The fourth proportional to 256,406,520.20, 384,609,780.30 and 74,659,627.40 is: 111,989,441.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,406,520.20 : 384,609,780.30 = 74,659,627.40 : x
  2. Step 2: Convert to fraction form
    256,406,520.20/384,609,780.30 = 74,659,627.40/x
  3. Step 3: Cross multiply
    256,406,520.20x = 384,609,780.30 × 74,659,627.40
  4. Step 4: Simplify right side
    256,406,520.20x = 28,714,822,891,593,864
  5. Step 5: Solve for x
    x = 28,714,822,891,593,864/256,406,520.20
  6. Step 6: Final answer
    x = 111,989,441.10

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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.