Home / 438,273,092.60-657,409,638.90-211,780,676.60

Finding the Fourth Proportional to 438,273,092.60, 657,409,638.90 and 211,780,676.60

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Solution

The fourth proportional to 438,273,092.60, 657,409,638.90 and 211,780,676.60 is: 317,671,014.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,273,092.60 : 657,409,638.90 = 211,780,676.60 : x
  2. Step 2: Convert to fraction form
    438,273,092.60/657,409,638.90 = 211,780,676.60/x
  3. Step 3: Cross multiply
    438,273,092.60x = 657,409,638.90 × 211,780,676.60
  4. Step 4: Simplify right side
    438,273,092.60x = 139,226,658,129,603,664
  5. Step 5: Solve for x
    x = 139,226,658,129,603,664/438,273,092.60
  6. Step 6: Final answer
    x = 317,671,014.90

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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.