Home / 665,086,506.40-997,652,569.20-205,021,021.60

Finding the Fourth Proportional to 665,086,506.40, 997,652,569.20 and 205,021,021.60

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Solution

The fourth proportional to 665,086,506.40, 997,652,569.20 and 205,021,021.60 is: 307,538,563.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,086,506.40 : 997,652,569.20 = 205,021,021.60 : x
  2. Step 2: Convert to fraction form
    665,086,506.40/997,652,569.20 = 205,021,021.60/x
  3. Step 3: Cross multiply
    665,086,506.40x = 997,652,569.20 × 205,021,021.60
  4. Step 4: Simplify right side
    665,086,506.40x = 204,539,748,939,248,704
  5. Step 5: Solve for x
    x = 204,539,748,939,248,704/665,086,506.40
  6. Step 6: Final answer
    x = 307,538,563.74

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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.