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Finding the Fourth Proportional to 553,779.38, 764,215.84 and 299,130.56

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Solution

The fourth proportional to 553,779.38, 764,215.84 and 299,130.56 is: 412,800.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,779.38 : 764,215.84 = 299,130.56 : x
  2. Step 2: Convert to fraction form
    553,779.38/764,215.84 = 299,130.56/x
  3. Step 3: Cross multiply
    553,779.38x = 764,215.84 × 299,130.56
  4. Step 4: Simplify right side
    553,779.38x = 228,600,314,464.52
  5. Step 5: Solve for x
    x = 228,600,314,464.52/553,779.38
  6. Step 6: Final answer
    x = 412,800.34

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1.5x scale

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.