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Finding the Fourth Proportional to 621,372.44, 859,022.70 and 615,688.68

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Solution

The fourth proportional to 621,372.44, 859,022.70 and 615,688.68 is: 851,165.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,372.44 : 859,022.70 = 615,688.68 : x
  2. Step 2: Convert to fraction form
    621,372.44/859,022.70 = 615,688.68/x
  3. Step 3: Cross multiply
    621,372.44x = 859,022.70 × 615,688.68
  4. Step 4: Simplify right side
    621,372.44x = 528,890,552,253.04
  5. Step 5: Solve for x
    x = 528,890,552,253.04/621,372.44
  6. Step 6: Final answer
    x = 851,165.13

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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.