Home / 428,402.42-642,554.67-112,884.02

Finding the Fourth Proportional to 428,402.42, 642,554.67 and 112,884.02

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Solution

The fourth proportional to 428,402.42, 642,554.67 and 112,884.02 is: 169,313.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,402.42 : 642,554.67 = 112,884.02 : x
  2. Step 2: Convert to fraction form
    428,402.42/642,554.67 = 112,884.02/x
  3. Step 3: Cross multiply
    428,402.42x = 642,554.67 × 112,884.02
  4. Step 4: Simplify right side
    428,402.42x = 72,534,154,219.37
  5. Step 5: Solve for x
    x = 72,534,154,219.37/428,402.42
  6. Step 6: Final answer
    x = 169,313.13

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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.