Home / 855,070.80-1,281,760.20-405,000.60

Finding the Fourth Proportional to 855,070.80, 1,281,760.20 and 405,000.60

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Solution

The fourth proportional to 855,070.80, 1,281,760.20 and 405,000.60 is: 607,100.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,070.80 : 1,281,760.20 = 405,000.60 : x
  2. Step 2: Convert to fraction form
    855,070.80/1,281,760.20 = 405,000.60/x
  3. Step 3: Cross multiply
    855,070.80x = 1,281,760.20 × 405,000.60
  4. Step 4: Simplify right side
    855,070.80x = 519,113,650,056.12
  5. Step 5: Solve for x
    x = 519,113,650,056.12/855,070.80
  6. Step 6: Final answer
    x = 607,100.20

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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.