Home / 665,444.20-998,166.30-455,492.20

Finding the Fourth Proportional to 665,444.20, 998,166.30 and 455,492.20

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Solution

The fourth proportional to 665,444.20, 998,166.30 and 455,492.20 is: 683,238.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,444.20 : 998,166.30 = 455,492.20 : x
  2. Step 2: Convert to fraction form
    665,444.20/998,166.30 = 455,492.20/x
  3. Step 3: Cross multiply
    665,444.20x = 998,166.30 × 455,492.20
  4. Step 4: Simplify right side
    665,444.20x = 454,656,963,952.86
  5. Step 5: Solve for x
    x = 454,656,963,952.86/665,444.20
  6. Step 6: Final answer
    x = 683,238.30

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.