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Finding the Third Proportional to 423,312 and 576,472

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Solution

The third proportional to 423,312 and 576,472 is: 785,047.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,312 : 576,472 = 576,472 : x
  2. Step 2: Convert to fraction form
    423,312/576,472 = 576,472/x
  3. Step 3: Cross multiply
    423,312x = 576,472 × 576,472
  4. Step 4: Simplify right side
    423,312x = 332,319,966,784
  5. Step 5: Solve for x
    x = 332,319,966,784/423,312
  6. Step 6: Final answer
    x = 785,047.36

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.