Home / 678,493.60-1,017,740.40-205,511.20

Finding the Fourth Proportional to 678,493.60, 1,017,740.40 and 205,511.20

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Solution

The fourth proportional to 678,493.60, 1,017,740.40 and 205,511.20 is: 308,266.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,493.60 : 1,017,740.40 = 205,511.20 : x
  2. Step 2: Convert to fraction form
    678,493.60/1,017,740.40 = 205,511.20/x
  3. Step 3: Cross multiply
    678,493.60x = 1,017,740.40 × 205,511.20
  4. Step 4: Simplify right side
    678,493.60x = 209,157,050,892.48
  5. Step 5: Solve for x
    x = 209,157,050,892.48/678,493.60
  6. Step 6: Final answer
    x = 308,266.80

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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.