Home / 876,588,883.46-1,209,712,241.32-500,237,979.68

Finding the Fourth Proportional to 876,588,883.46, 1,209,712,241.32 and 500,237,979.68

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Solution

The fourth proportional to 876,588,883.46, 1,209,712,241.32 and 500,237,979.68 is: 690,339,586.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,588,883.46 : 1,209,712,241.32 = 500,237,979.68 : x
  2. Step 2: Convert to fraction form
    876,588,883.46/1,209,712,241.32 = 500,237,979.68/x
  3. Step 3: Cross multiply
    876,588,883.46x = 1,209,712,241.32 × 500,237,979.68
  4. Step 4: Simplify right side
    876,588,883.46x = 605,144,007,592,081,408
  5. Step 5: Solve for x
    x = 605,144,007,592,081,408/876,588,883.46
  6. Step 6: Final answer
    x = 690,339,586.79

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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.