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Finding the Fourth Proportional to 523,609.19, 722,639.33 and 316,991.46

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Solution

The fourth proportional to 523,609.19, 722,639.33 and 316,991.46 is: 437,483.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,609.19 : 722,639.33 = 316,991.46 : x
  2. Step 2: Convert to fraction form
    523,609.19/722,639.33 = 316,991.46/x
  3. Step 3: Cross multiply
    523,609.19x = 722,639.33 × 316,991.46
  4. Step 4: Simplify right side
    523,609.19x = 229,070,496,380.94
  5. Step 5: Solve for x
    x = 229,070,496,380.94/523,609.19
  6. Step 6: Final answer
    x = 437,483.72

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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.