Home / 679,013.80-1,018,520.70-442,817.80

Finding the Fourth Proportional to 679,013.80, 1,018,520.70 and 442,817.80

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Solution

The fourth proportional to 679,013.80, 1,018,520.70 and 442,817.80 is: 664,226.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,013.80 : 1,018,520.70 = 442,817.80 : x
  2. Step 2: Convert to fraction form
    679,013.80/1,018,520.70 = 442,817.80/x
  3. Step 3: Cross multiply
    679,013.80x = 1,018,520.70 × 442,817.80
  4. Step 4: Simplify right side
    679,013.80x = 451,019,095,628.46
  5. Step 5: Solve for x
    x = 451,019,095,628.46/679,013.80
  6. Step 6: Final answer
    x = 664,226.70

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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.