Home / 819,997.02-1,131,595.38-457,420.77

Finding the Fourth Proportional to 819,997.02, 1,131,595.38 and 457,420.77

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Solution

The fourth proportional to 819,997.02, 1,131,595.38 and 457,420.77 is: 631,240.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,997.02 : 1,131,595.38 = 457,420.77 : x
  2. Step 2: Convert to fraction form
    819,997.02/1,131,595.38 = 457,420.77/x
  3. Step 3: Cross multiply
    819,997.02x = 1,131,595.38 × 457,420.77
  4. Step 4: Simplify right side
    819,997.02x = 517,615,230,048.04
  5. Step 5: Solve for x
    x = 517,615,230,048.04/819,997.02
  6. Step 6: Final answer
    x = 631,240.38

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.