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Finding the Fourth Proportional to 658,639.28, 908,918.64 and 368,250.79

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Solution

The fourth proportional to 658,639.28, 908,918.64 and 368,250.79 is: 508,184.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,639.28 : 908,918.64 = 368,250.79 : x
  2. Step 2: Convert to fraction form
    658,639.28/908,918.64 = 368,250.79/x
  3. Step 3: Cross multiply
    658,639.28x = 908,918.64 × 368,250.79
  4. Step 4: Simplify right side
    658,639.28x = 334,710,007,225.73
  5. Step 5: Solve for x
    x = 334,710,007,225.73/658,639.28
  6. Step 6: Final answer
    x = 508,184.10

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.