Home / 819,698.40-1,131,190.20-457,145.28

Finding the Fourth Proportional to 819,698.40, 1,131,190.20 and 457,145.28

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Solution

The fourth proportional to 819,698.40, 1,131,190.20 and 457,145.28 is: 630,864.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,698.40 : 1,131,190.20 = 457,145.28 : x
  2. Step 2: Convert to fraction form
    819,698.40/1,131,190.20 = 457,145.28/x
  3. Step 3: Cross multiply
    819,698.40x = 1,131,190.20 × 457,145.28
  4. Step 4: Simplify right side
    819,698.40x = 517,118,260,712.26
  5. Step 5: Solve for x
    x = 517,118,260,712.26/819,698.40
  6. Step 6: Final answer
    x = 630,864.06

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Double scale
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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.