Home / 858,873,723.70-1,288,688,499.15-398,574,958.90

Finding the Fourth Proportional to 858,873,723.70, 1,288,688,499.15 and 398,574,958.90

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Solution

The fourth proportional to 858,873,723.70, 1,288,688,499.15 and 398,574,958.90 is: 598,037,815.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,873,723.70 : 1,288,688,499.15 = 398,574,958.90 : x
  2. Step 2: Convert to fraction form
    858,873,723.70/1,288,688,499.15 = 398,574,958.90/x
  3. Step 3: Cross multiply
    858,873,723.70x = 1,288,688,499.15 × 398,574,958.90
  4. Step 4: Simplify right side
    858,873,723.70x = 513,638,965,583,613,952
  5. Step 5: Solve for x
    x = 513,638,965,583,613,952/858,873,723.70
  6. Step 6: Final answer
    x = 598,037,815.58

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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.