Home / 1,006,521,618.72-1,387,811,321.28-689,135,771.28

Finding the Fourth Proportional to 1,006,521,618.72, 1,387,811,321.28 and 689,135,771.28

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Solution

The fourth proportional to 1,006,521,618.72, 1,387,811,321.28 and 689,135,771.28 is: 950,193,624.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,006,521,618.72 : 1,387,811,321.28 = 689,135,771.28 : x
  2. Step 2: Convert to fraction form
    1,006,521,618.72/1,387,811,321.28 = 689,135,771.28/x
  3. Step 3: Cross multiply
    1,006,521,618.72x = 1,387,811,321.28 × 689,135,771.28
  4. Step 4: Simplify right side
    1,006,521,618.72x = 956,390,425,281,408,640
  5. Step 5: Solve for x
    x = 956,390,425,281,408,640/1,006,521,618.72
  6. Step 6: Final answer
    x = 950,193,624.75

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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.