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Finding the Fourth Proportional to 658,718.82, 908,989.74 and 368,354.32

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Solution

The fourth proportional to 658,718.82, 908,989.74 and 368,354.32 is: 508,305.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,718.82 : 908,989.74 = 368,354.32 : x
  2. Step 2: Convert to fraction form
    658,718.82/908,989.74 = 368,354.32/x
  3. Step 3: Cross multiply
    658,718.82x = 908,989.74 × 368,354.32
  4. Step 4: Simplify right side
    658,718.82x = 334,830,297,564.68
  5. Step 5: Solve for x
    x = 334,830,297,564.68/658,718.82
  6. Step 6: Final answer
    x = 508,305.35

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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.