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Finding the Fourth Proportional to 643,732.40, 965,598.59 and 343,302.79

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Solution

The fourth proportional to 643,732.40, 965,598.59 and 343,302.79 is: 514,954.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,732.40 : 965,598.59 = 343,302.79 : x
  2. Step 2: Convert to fraction form
    643,732.40/965,598.59 = 343,302.79/x
  3. Step 3: Cross multiply
    643,732.40x = 965,598.59 × 343,302.79
  4. Step 4: Simplify right side
    643,732.40x = 331,492,688,411.33
  5. Step 5: Solve for x
    x = 331,492,688,411.33/643,732.40
  6. Step 6: Final answer
    x = 514,954.18

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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.