Home / 603,612,601.20-905,418,901.80-396,988,340.40

Finding the Fourth Proportional to 603,612,601.20, 905,418,901.80 and 396,988,340.40

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Solution

The fourth proportional to 603,612,601.20, 905,418,901.80 and 396,988,340.40 is: 595,482,510.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,612,601.20 : 905,418,901.80 = 396,988,340.40 : x
  2. Step 2: Convert to fraction form
    603,612,601.20/905,418,901.80 = 396,988,340.40/x
  3. Step 3: Cross multiply
    603,612,601.20x = 905,418,901.80 × 396,988,340.40
  4. Step 4: Simplify right side
    603,612,601.20x = 359,440,747,192,372,544
  5. Step 5: Solve for x
    x = 359,440,747,192,372,544/603,612,601.20
  6. Step 6: Final answer
    x = 595,482,510.60

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Similar ratio
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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.