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Finding the Fourth Proportional to 646,316.64, 891,952.38 and 359,830.44

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Solution

The fourth proportional to 646,316.64, 891,952.38 and 359,830.44 is: 496,585.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,316.64 : 891,952.38 = 359,830.44 : x
  2. Step 2: Convert to fraction form
    646,316.64/891,952.38 = 359,830.44/x
  3. Step 3: Cross multiply
    646,316.64x = 891,952.38 × 359,830.44
  4. Step 4: Simplify right side
    646,316.64x = 320,951,617,354.45
  5. Step 5: Solve for x
    x = 320,951,617,354.45/646,316.64
  6. Step 6: Final answer
    x = 496,585.73

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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.