Home / 1,011,187,773.96-1,515,449,900.34-428,200,649.16

Finding the Fourth Proportional to 1,011,187,773.96, 1,515,449,900.34 and 428,200,649.16

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Solution

The fourth proportional to 1,011,187,773.96, 1,515,449,900.34 and 428,200,649.16 is: 641,737,022.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,011,187,773.96 : 1,515,449,900.34 = 428,200,649.16 : x
  2. Step 2: Convert to fraction form
    1,011,187,773.96/1,515,449,900.34 = 428,200,649.16/x
  3. Step 3: Cross multiply
    1,011,187,773.96x = 1,515,449,900.34 × 428,200,649.16
  4. Step 4: Simplify right side
    1,011,187,773.96x = 648,916,631,095,045,248
  5. Step 5: Solve for x
    x = 648,916,631,095,045,248/1,011,187,773.96
  6. Step 6: Final answer
    x = 641,737,022.35

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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.