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Finding the Fourth Proportional to 722,132, 996,576.40 and 435,645.96

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Solution

The fourth proportional to 722,132, 996,576.40 and 435,645.96 is: 601,212.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,132 : 996,576.40 = 435,645.96 : x
  2. Step 2: Convert to fraction form
    722,132/996,576.40 = 435,645.96/x
  3. Step 3: Cross multiply
    722,132x = 996,576.40 × 435,645.96
  4. Step 4: Simplify right side
    722,132x = 434,154,482,491.34
  5. Step 5: Solve for x
    x = 434,154,482,491.34/722,132
  6. Step 6: Final answer
    x = 601,212.08

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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.