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Finding the Fourth Proportional to 403,459.59, 556,253.94 and 330,591.58

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Solution

The fourth proportional to 403,459.59, 556,253.94 and 330,591.58 is: 455,790.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,459.59 : 556,253.94 = 330,591.58 : x
  2. Step 2: Convert to fraction form
    403,459.59/556,253.94 = 330,591.58/x
  3. Step 3: Cross multiply
    403,459.59x = 556,253.94 × 330,591.58
  4. Step 4: Simplify right side
    403,459.59x = 183,892,868,905.83
  5. Step 5: Solve for x
    x = 183,892,868,905.83/403,459.59
  6. Step 6: Final answer
    x = 455,790.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.