Home / 693,105.40-1,039,139.70-377,918.20

Finding the Fourth Proportional to 693,105.40, 1,039,139.70 and 377,918.20

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Solution

The fourth proportional to 693,105.40, 1,039,139.70 and 377,918.20 is: 566,594.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,105.40 : 1,039,139.70 = 377,918.20 : x
  2. Step 2: Convert to fraction form
    693,105.40/1,039,139.70 = 377,918.20/x
  3. Step 3: Cross multiply
    693,105.40x = 1,039,139.70 × 377,918.20
  4. Step 4: Simplify right side
    693,105.40x = 392,709,804,972.54
  5. Step 5: Solve for x
    x = 392,709,804,972.54/693,105.40
  6. Step 6: Final answer
    x = 566,594.64

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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.