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Finding the Fourth Proportional to 658,456.95, 908,667.43 and 368,068.45

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Solution

The fourth proportional to 658,456.95, 908,667.43 and 368,068.45 is: 507,932.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,456.95 : 908,667.43 = 368,068.45 : x
  2. Step 2: Convert to fraction form
    658,456.95/908,667.43 = 368,068.45/x
  3. Step 3: Cross multiply
    658,456.95x = 908,667.43 × 368,068.45
  4. Step 4: Simplify right side
    658,456.95x = 334,451,812,525.58
  5. Step 5: Solve for x
    x = 334,451,812,525.58/658,456.95
  6. Step 6: Final answer
    x = 507,932.69

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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.