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Finding the Fourth Proportional to 715,280.64, 986,676.78 and 446,542.08

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Solution

The fourth proportional to 715,280.64, 986,676.78 and 446,542.08 is: 615,971.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,280.64 : 986,676.78 = 446,542.08 : x
  2. Step 2: Convert to fraction form
    715,280.64/986,676.78 = 446,542.08/x
  3. Step 3: Cross multiply
    715,280.64x = 986,676.78 × 446,542.08
  4. Step 4: Simplify right side
    715,280.64x = 440,592,701,628.90
  5. Step 5: Solve for x
    x = 440,592,701,628.90/715,280.64
  6. Step 6: Final answer
    x = 615,971.80

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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.