Home / 402,505,285.80-603,439,064.10-220,752,463.80

Finding the Fourth Proportional to 402,505,285.80, 603,439,064.10 and 220,752,463.80

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Solution

The fourth proportional to 402,505,285.80, 603,439,064.10 and 220,752,463.80 is: 330,953,815.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,505,285.80 : 603,439,064.10 = 220,752,463.80 : x
  2. Step 2: Convert to fraction form
    402,505,285.80/603,439,064.10 = 220,752,463.80/x
  3. Step 3: Cross multiply
    402,505,285.80x = 603,439,064.10 × 220,752,463.80
  4. Step 4: Simplify right side
    402,505,285.80x = 133,210,660,153,241,136
  5. Step 5: Solve for x
    x = 133,210,660,153,241,136/402,505,285.80
  6. Step 6: Final answer
    x = 330,953,815.65

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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.