Home / 747,443.62-1,031,505.74-420,868.90

Finding the Fourth Proportional to 747,443.62, 1,031,505.74 and 420,868.90

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Solution

The fourth proportional to 747,443.62, 1,031,505.74 and 420,868.90 is: 580,817.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,443.62 : 1,031,505.74 = 420,868.90 : x
  2. Step 2: Convert to fraction form
    747,443.62/1,031,505.74 = 420,868.90/x
  3. Step 3: Cross multiply
    747,443.62x = 1,031,505.74 × 420,868.90
  4. Step 4: Simplify right side
    747,443.62x = 434,128,686,137.49
  5. Step 5: Solve for x
    x = 434,128,686,137.49/747,443.62
  6. Step 6: Final answer
    x = 580,817.97

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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.