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Finding the Fourth Proportional to 503,780.88, 695,222.28 and 277,428

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Solution

The fourth proportional to 503,780.88, 695,222.28 and 277,428 is: 382,853.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,780.88 : 695,222.28 = 277,428 : x
  2. Step 2: Convert to fraction form
    503,780.88/695,222.28 = 277,428/x
  3. Step 3: Cross multiply
    503,780.88x = 695,222.28 × 277,428
  4. Step 4: Simplify right side
    503,780.88x = 192,874,126,695.84
  5. Step 5: Solve for x
    x = 192,874,126,695.84/503,780.88
  6. Step 6: Final answer
    x = 382,853.21

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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.