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Finding the Fourth Proportional to 558,459, 770,615.10 and 316,664.28

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Solution

The fourth proportional to 558,459, 770,615.10 and 316,664.28 is: 436,963.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,459 : 770,615.10 = 316,664.28 : x
  2. Step 2: Convert to fraction form
    558,459/770,615.10 = 316,664.28/x
  3. Step 3: Cross multiply
    558,459x = 770,615.10 × 316,664.28
  4. Step 4: Simplify right side
    558,459x = 244,026,275,798.63
  5. Step 5: Solve for x
    x = 244,026,275,798.63/558,459
  6. Step 6: Final answer
    x = 436,963.64

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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.