Home / 626,680,758.87-864,459,254.37-391,322,856.15

Finding the Fourth Proportional to 626,680,758.87, 864,459,254.37 and 391,322,856.15

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Solution

The fourth proportional to 626,680,758.87, 864,459,254.37 and 391,322,856.15 is: 539,800,623.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,680,758.87 : 864,459,254.37 = 391,322,856.15 : x
  2. Step 2: Convert to fraction form
    626,680,758.87/864,459,254.37 = 391,322,856.15/x
  3. Step 3: Cross multiply
    626,680,758.87x = 864,459,254.37 × 391,322,856.15
  4. Step 4: Simplify right side
    626,680,758.87x = 338,282,664,445,367,744
  5. Step 5: Solve for x
    x = 338,282,664,445,367,744/626,680,758.87
  6. Step 6: Final answer
    x = 539,800,623.61

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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.