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Finding the Fourth Proportional to 404,330.40, 606,495.60 and 396,457.20

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Solution

The fourth proportional to 404,330.40, 606,495.60 and 396,457.20 is: 594,685.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,330.40 : 606,495.60 = 396,457.20 : x
  2. Step 2: Convert to fraction form
    404,330.40/606,495.60 = 396,457.20/x
  3. Step 3: Cross multiply
    404,330.40x = 606,495.60 × 396,457.20
  4. Step 4: Simplify right side
    404,330.40x = 240,449,547,388.32
  5. Step 5: Solve for x
    x = 240,449,547,388.32/404,330.40
  6. Step 6: Final answer
    x = 594,685.80

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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.