Home / 28,404,991.40-42,607,487.10-19,712,978.60

Finding the Fourth Proportional to 28,404,991.40, 42,607,487.10 and 19,712,978.60

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Solution

The fourth proportional to 28,404,991.40, 42,607,487.10 and 19,712,978.60 is: 29,569,467.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,404,991.40 : 42,607,487.10 = 19,712,978.60 : x
  2. Step 2: Convert to fraction form
    28,404,991.40/42,607,487.10 = 19,712,978.60/x
  3. Step 3: Cross multiply
    28,404,991.40x = 42,607,487.10 × 19,712,978.60
  4. Step 4: Simplify right side
    28,404,991.40x = 839,920,481,402,076.12
  5. Step 5: Solve for x
    x = 839,920,481,402,076.12/28,404,991.40
  6. Step 6: Final answer
    x = 29,569,467.90

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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.