Home / 891,821.80-1,335,659.10-609,812.20

Finding the Fourth Proportional to 891,821.80, 1,335,659.10 and 609,812.20

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Solution

The fourth proportional to 891,821.80, 1,335,659.10 and 609,812.20 is: 913,300.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,821.80 : 1,335,659.10 = 609,812.20 : x
  2. Step 2: Convert to fraction form
    891,821.80/1,335,659.10 = 609,812.20/x
  3. Step 3: Cross multiply
    891,821.80x = 1,335,659.10 × 609,812.20
  4. Step 4: Simplify right side
    891,821.80x = 814,501,214,221.02
  5. Step 5: Solve for x
    x = 814,501,214,221.02/891,821.80
  6. Step 6: Final answer
    x = 913,300.41

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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.