Home / 513,353,843.43-708,423,482.30-278,409,688.71

Finding the Fourth Proportional to 513,353,843.43, 708,423,482.30 and 278,409,688.71

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Solution

The fourth proportional to 513,353,843.43, 708,423,482.30 and 278,409,688.71 is: 384,202,755.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,353,843.43 : 708,423,482.30 = 278,409,688.71 : x
  2. Step 2: Convert to fraction form
    513,353,843.43/708,423,482.30 = 278,409,688.71/x
  3. Step 3: Cross multiply
    513,353,843.43x = 708,423,482.30 × 278,409,688.71
  4. Step 4: Simplify right side
    513,353,843.43x = 197,231,961,180,605,120
  5. Step 5: Solve for x
    x = 197,231,961,180,605,120/513,353,843.43
  6. Step 6: Final answer
    x = 384,202,755.48

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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.