Home / 679,305.40-1,017,791.70-442,526.20

Finding the Fourth Proportional to 679,305.40, 1,017,791.70 and 442,526.20

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Solution

The fourth proportional to 679,305.40, 1,017,791.70 and 442,526.20 is: 663,029.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,305.40 : 1,017,791.70 = 442,526.20 : x
  2. Step 2: Convert to fraction form
    679,305.40/1,017,791.70 = 442,526.20/x
  3. Step 3: Cross multiply
    679,305.40x = 1,017,791.70 × 442,526.20
  4. Step 4: Simplify right side
    679,305.40x = 450,399,493,392.54
  5. Step 5: Solve for x
    x = 450,399,493,392.54/679,305.40
  6. Step 6: Final answer
    x = 663,029.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.