Home / 505,291,141.71-697,262,858.10-285,296,282.19

Finding the Fourth Proportional to 505,291,141.71, 697,262,858.10 and 285,296,282.19

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Solution

The fourth proportional to 505,291,141.71, 697,262,858.10 and 285,296,282.19 is: 393,686,895.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,291,141.71 : 697,262,858.10 = 285,296,282.19 : x
  2. Step 2: Convert to fraction form
    505,291,141.71/697,262,858.10 = 285,296,282.19/x
  3. Step 3: Cross multiply
    505,291,141.71x = 697,262,858.10 × 285,296,282.19
  4. Step 4: Simplify right side
    505,291,141.71x = 198,926,501,125,103,520
  5. Step 5: Solve for x
    x = 198,926,501,125,103,520/505,291,141.71
  6. Step 6: Final answer
    x = 393,686,895.94

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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.