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Finding the Fourth Proportional to 718,464.57, 991,110.06 and 446,429.10

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Solution

The fourth proportional to 718,464.57, 991,110.06 and 446,429.10 is: 615,841.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,464.57 : 991,110.06 = 446,429.10 : x
  2. Step 2: Convert to fraction form
    718,464.57/991,110.06 = 446,429.10/x
  3. Step 3: Cross multiply
    718,464.57x = 991,110.06 × 446,429.10
  4. Step 4: Simplify right side
    718,464.57x = 442,460,375,803.41
  5. Step 5: Solve for x
    x = 442,460,375,803.41/718,464.57
  6. Step 6: Final answer
    x = 615,841.61

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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.