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Finding the Fourth Proportional to 691,482,965.76, 954,253,894.74 and 378,210,481.02

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Solution

The fourth proportional to 691,482,965.76, 954,253,894.74 and 378,210,481.02 is: 521,934,512.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,482,965.76 : 954,253,894.74 = 378,210,481.02 : x
  2. Step 2: Convert to fraction form
    691,482,965.76/954,253,894.74 = 378,210,481.02/x
  3. Step 3: Cross multiply
    691,482,965.76x = 954,253,894.74 × 378,210,481.02
  4. Step 4: Simplify right side
    691,482,965.76x = 360,908,824,544,823,808
  5. Step 5: Solve for x
    x = 360,908,824,544,823,808/691,482,965.76
  6. Step 6: Final answer
    x = 521,934,512.37

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Double scale
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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.