Home / 603,614,003.70-905,421,005.55-396,989,742.90

Finding the Fourth Proportional to 603,614,003.70, 905,421,005.55 and 396,989,742.90

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Solution

The fourth proportional to 603,614,003.70, 905,421,005.55 and 396,989,742.90 is: 595,484,614.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,614,003.70 : 905,421,005.55 = 396,989,742.90 : x
  2. Step 2: Convert to fraction form
    603,614,003.70/905,421,005.55 = 396,989,742.90/x
  3. Step 3: Cross multiply
    603,614,003.70x = 905,421,005.55 × 396,989,742.90
  4. Step 4: Simplify right side
    603,614,003.70x = 359,442,852,209,553,920
  5. Step 5: Solve for x
    x = 359,442,852,209,553,920/603,614,003.70
  6. Step 6: Final answer
    x = 595,484,614.35

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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.