Home / 457,742.40-685,231.20-402,446.40

Finding the Fourth Proportional to 457,742.40, 685,231.20 and 402,446.40

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Solution

The fourth proportional to 457,742.40, 685,231.20 and 402,446.40 is: 602,454.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,742.40 : 685,231.20 = 402,446.40 : x
  2. Step 2: Convert to fraction form
    457,742.40/685,231.20 = 402,446.40/x
  3. Step 3: Cross multiply
    457,742.40x = 685,231.20 × 402,446.40
  4. Step 4: Simplify right side
    457,742.40x = 275,768,829,607.68
  5. Step 5: Solve for x
    x = 275,768,829,607.68/457,742.40
  6. Step 6: Final answer
    x = 602,454.20

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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.