Home / 679,761.72-938,117.03-449,923.01

Finding the Fourth Proportional to 679,761.72, 938,117.03 and 449,923.01

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Solution

The fourth proportional to 679,761.72, 938,117.03 and 449,923.01 is: 620,924.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,761.72 : 938,117.03 = 449,923.01 : x
  2. Step 2: Convert to fraction form
    679,761.72/938,117.03 = 449,923.01/x
  3. Step 3: Cross multiply
    679,761.72x = 938,117.03 × 449,923.01
  4. Step 4: Simplify right side
    679,761.72x = 422,080,430,929.66
  5. Step 5: Solve for x
    x = 422,080,430,929.66/679,761.72
  6. Step 6: Final answer
    x = 620,924.10

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1.5x scale

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.