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Finding the Fourth Proportional to 553,779.88, 764,216.53 and 299,131.06

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Solution

The fourth proportional to 553,779.88, 764,216.53 and 299,131.06 is: 412,801.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,779.88 : 764,216.53 = 299,131.06 : x
  2. Step 2: Convert to fraction form
    553,779.88/764,216.53 = 299,131.06/x
  3. Step 3: Cross multiply
    553,779.88x = 764,216.53 × 299,131.06
  4. Step 4: Simplify right side
    553,779.88x = 228,600,900,688.42
  5. Step 5: Solve for x
    x = 228,600,900,688.42/553,779.88
  6. Step 6: Final answer
    x = 412,801.02

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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.