Home / 404,665,270.72-607,019,980.80-128,296,497.36

Finding the Fourth Proportional to 404,665,270.72, 607,019,980.80 and 128,296,497.36

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Solution

The fourth proportional to 404,665,270.72, 607,019,980.80 and 128,296,497.36 is: 192,451,744.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,665,270.72 : 607,019,980.80 = 128,296,497.36 : x
  2. Step 2: Convert to fraction form
    404,665,270.72/607,019,980.80 = 128,296,497.36/x
  3. Step 3: Cross multiply
    404,665,270.72x = 607,019,980.80 × 128,296,497.36
  4. Step 4: Simplify right side
    404,665,270.72x = 77,878,537,364,174,448
  5. Step 5: Solve for x
    x = 77,878,537,364,174,448/404,665,270.72
  6. Step 6: Final answer
    x = 192,451,744.69

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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.