Home / 1,120,520.40-1,682,530.20-648,128.40

Finding the Fourth Proportional to 1,120,520.40, 1,682,530.20 and 648,128.40

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Solution

The fourth proportional to 1,120,520.40, 1,682,530.20 and 648,128.40 is: 973,204.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,520.40 : 1,682,530.20 = 648,128.40 : x
  2. Step 2: Convert to fraction form
    1,120,520.40/1,682,530.20 = 648,128.40/x
  3. Step 3: Cross multiply
    1,120,520.40x = 1,682,530.20 × 648,128.40
  4. Step 4: Simplify right side
    1,120,520.40x = 1,090,495,606,477.68
  5. Step 5: Solve for x
    x = 1,090,495,606,477.68/1,120,520.40
  6. Step 6: Final answer
    x = 973,204.60

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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.