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Finding the Fourth Proportional to 658,662, 908,954.40 and 356,856

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Solution

The fourth proportional to 658,662, 908,954.40 and 356,856 is: 492,461.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,662 : 908,954.40 = 356,856 : x
  2. Step 2: Convert to fraction form
    658,662/908,954.40 = 356,856/x
  3. Step 3: Cross multiply
    658,662x = 908,954.40 × 356,856
  4. Step 4: Simplify right side
    658,662x = 324,365,831,366.40
  5. Step 5: Solve for x
    x = 324,365,831,366.40/658,662
  6. Step 6: Final answer
    x = 492,461.74

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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.