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Finding the Fourth Proportional to 569,631.20, 786,089 and 321,253.42

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Solution

The fourth proportional to 569,631.20, 786,089 and 321,253.42 is: 443,328.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,631.20 : 786,089 = 321,253.42 : x
  2. Step 2: Convert to fraction form
    569,631.20/786,089 = 321,253.42/x
  3. Step 3: Cross multiply
    569,631.20x = 786,089 × 321,253.42
  4. Step 4: Simplify right side
    569,631.20x = 252,533,779,674.38
  5. Step 5: Solve for x
    x = 252,533,779,674.38/569,631.20
  6. Step 6: Final answer
    x = 443,328.56

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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.