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Finding the Fourth Proportional to 526,903.18, 790,353.65 and 407,134.28

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Solution

The fourth proportional to 526,903.18, 790,353.65 and 407,134.28 is: 610,700.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,903.18 : 790,353.65 = 407,134.28 : x
  2. Step 2: Convert to fraction form
    526,903.18/790,353.65 = 407,134.28/x
  3. Step 3: Cross multiply
    526,903.18x = 790,353.65 × 407,134.28
  4. Step 4: Simplify right side
    526,903.18x = 321,780,067,231.84
  5. Step 5: Solve for x
    x = 321,780,067,231.84/526,903.18
  6. Step 6: Final answer
    x = 610,700.56

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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.