Home / 511,499,204.49-705,867,574.55-285,435,817.89

Finding the Fourth Proportional to 511,499,204.49, 705,867,574.55 and 285,435,817.89

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Solution

The fourth proportional to 511,499,204.49, 705,867,574.55 and 285,435,817.89 is: 393,900,687.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,499,204.49 : 705,867,574.55 = 285,435,817.89 : x
  2. Step 2: Convert to fraction form
    511,499,204.49/705,867,574.55 = 285,435,817.89/x
  3. Step 3: Cross multiply
    511,499,204.49x = 705,867,574.55 × 285,435,817.89
  4. Step 4: Simplify right side
    511,499,204.49x = 201,479,888,461,776,416
  5. Step 5: Solve for x
    x = 201,479,888,461,776,416/511,499,204.49
  6. Step 6: Final answer
    x = 393,900,687.80

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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.