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Finding the Fourth Proportional to 605,718.60, 908,577.90 and 368,939.40

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Solution

The fourth proportional to 605,718.60, 908,577.90 and 368,939.40 is: 553,409.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,718.60 : 908,577.90 = 368,939.40 : x
  2. Step 2: Convert to fraction form
    605,718.60/908,577.90 = 368,939.40/x
  3. Step 3: Cross multiply
    605,718.60x = 908,577.90 × 368,939.40
  4. Step 4: Simplify right side
    605,718.60x = 335,210,185,279.26
  5. Step 5: Solve for x
    x = 335,210,185,279.26/605,718.60
  6. Step 6: Final answer
    x = 553,409.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.