Home / 385,408,858.60-577,921,998.30-139,755,687.40

Finding the Fourth Proportional to 385,408,858.60, 577,921,998.30 and 139,755,687.40

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Solution

The fourth proportional to 385,408,858.60, 577,921,998.30 and 139,755,687.40 is: 209,564,166.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,408,858.60 : 577,921,998.30 = 139,755,687.40 : x
  2. Step 2: Convert to fraction form
    385,408,858.60/577,921,998.30 = 139,755,687.40/x
  3. Step 3: Cross multiply
    385,408,858.60x = 577,921,998.30 × 139,755,687.40
  4. Step 4: Simplify right side
    385,408,858.60x = 80,767,886,135,998,128
  5. Step 5: Solve for x
    x = 80,767,886,135,998,128/385,408,858.60
  6. Step 6: Final answer
    x = 209,564,166.30

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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.