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Finding the Fourth Proportional to 404,734.60, 607,101.90 and 387,457.30

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Solution

The fourth proportional to 404,734.60, 607,101.90 and 387,457.30 is: 581,185.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,734.60 : 607,101.90 = 387,457.30 : x
  2. Step 2: Convert to fraction form
    404,734.60/607,101.90 = 387,457.30/x
  3. Step 3: Cross multiply
    404,734.60x = 607,101.90 × 387,457.30
  4. Step 4: Simplify right side
    404,734.60x = 235,226,062,998.87
  5. Step 5: Solve for x
    x = 235,226,062,998.87/404,734.60
  6. Step 6: Final answer
    x = 581,185.95

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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.