Home / 858,873,684.70-1,288,688,440.65-398,574,919.90

Finding the Fourth Proportional to 858,873,684.70, 1,288,688,440.65 and 398,574,919.90

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Solution

The fourth proportional to 858,873,684.70, 1,288,688,440.65 and 398,574,919.90 is: 598,037,757.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,873,684.70 : 1,288,688,440.65 = 398,574,919.90 : x
  2. Step 2: Convert to fraction form
    858,873,684.70/1,288,688,440.65 = 398,574,919.90/x
  3. Step 3: Cross multiply
    858,873,684.70x = 1,288,688,440.65 × 398,574,919.90
  4. Step 4: Simplify right side
    858,873,684.70x = 513,638,892,008,129,664
  5. Step 5: Solve for x
    x = 513,638,892,008,129,664/858,873,684.70
  6. Step 6: Final answer
    x = 598,037,757.07

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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.