Home / 685,689.20-1,026,784.20-545,721.20

Finding the Fourth Proportional to 685,689.20, 1,026,784.20 and 545,721.20

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Solution

The fourth proportional to 685,689.20, 1,026,784.20 and 545,721.20 is: 817,189.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,689.20 : 1,026,784.20 = 545,721.20 : x
  2. Step 2: Convert to fraction form
    685,689.20/1,026,784.20 = 545,721.20/x
  3. Step 3: Cross multiply
    685,689.20x = 1,026,784.20 × 545,721.20
  4. Step 4: Simplify right side
    685,689.20x = 560,337,905,765.04
  5. Step 5: Solve for x
    x = 560,337,905,765.04/685,689.20
  6. Step 6: Final answer
    x = 817,189.34

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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.