Home / 459,706,408.20-689,559,612.30-287,377,806.60

Finding the Fourth Proportional to 459,706,408.20, 689,559,612.30 and 287,377,806.60

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Solution

The fourth proportional to 459,706,408.20, 689,559,612.30 and 287,377,806.60 is: 431,066,709.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,706,408.20 : 689,559,612.30 = 287,377,806.60 : x
  2. Step 2: Convert to fraction form
    459,706,408.20/689,559,612.30 = 287,377,806.60/x
  3. Step 3: Cross multiply
    459,706,408.20x = 689,559,612.30 × 287,377,806.60
  4. Step 4: Simplify right side
    459,706,408.20x = 198,164,128,902,720,384
  5. Step 5: Solve for x
    x = 198,164,128,902,720,384/459,706,408.20
  6. Step 6: Final answer
    x = 431,066,709.90

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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.