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Finding the Fourth Proportional to 403,256.60, 604,884.90 and 278,840.60

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Solution

The fourth proportional to 403,256.60, 604,884.90 and 278,840.60 is: 418,260.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,256.60 : 604,884.90 = 278,840.60 : x
  2. Step 2: Convert to fraction form
    403,256.60/604,884.90 = 278,840.60/x
  3. Step 3: Cross multiply
    403,256.60x = 604,884.90 × 278,840.60
  4. Step 4: Simplify right side
    403,256.60x = 168,666,468,446.94
  5. Step 5: Solve for x
    x = 168,666,468,446.94/403,256.60
  6. Step 6: Final answer
    x = 418,260.90

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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.