Home / 863,999.80-1,295,999.70-609,638.20

Finding the Fourth Proportional to 863,999.80, 1,295,999.70 and 609,638.20

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Solution

The fourth proportional to 863,999.80, 1,295,999.70 and 609,638.20 is: 914,457.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,999.80 : 1,295,999.70 = 609,638.20 : x
  2. Step 2: Convert to fraction form
    863,999.80/1,295,999.70 = 609,638.20/x
  3. Step 3: Cross multiply
    863,999.80x = 1,295,999.70 × 609,638.20
  4. Step 4: Simplify right side
    863,999.80x = 790,090,924,308.54
  5. Step 5: Solve for x
    x = 790,090,924,308.54/863,999.80
  6. Step 6: Final answer
    x = 914,457.30

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1.5x scale

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.