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Finding the Fourth Proportional to 459,908.20, 689,862.30 and 404,612.20

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Solution

The fourth proportional to 459,908.20, 689,862.30 and 404,612.20 is: 606,918.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,908.20 : 689,862.30 = 404,612.20 : x
  2. Step 2: Convert to fraction form
    459,908.20/689,862.30 = 404,612.20/x
  3. Step 3: Cross multiply
    459,908.20x = 689,862.30 × 404,612.20
  4. Step 4: Simplify right side
    459,908.20x = 279,126,702,900.06
  5. Step 5: Solve for x
    x = 279,126,702,900.06/459,908.20
  6. Step 6: Final answer
    x = 606,918.30

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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.