Home / 528,233,918.80-728,985,574.92-293,284,591.12

Finding the Fourth Proportional to 528,233,918.80, 728,985,574.92 and 293,284,591.12

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Solution

The fourth proportional to 528,233,918.80, 728,985,574.92 and 293,284,591.12 is: 404,745,376.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,233,918.80 : 728,985,574.92 = 293,284,591.12 : x
  2. Step 2: Convert to fraction form
    528,233,918.80/728,985,574.92 = 293,284,591.12/x
  3. Step 3: Cross multiply
    528,233,918.80x = 728,985,574.92 × 293,284,591.12
  4. Step 4: Simplify right side
    528,233,918.80x = 213,800,236,272,790,304
  5. Step 5: Solve for x
    x = 213,800,236,272,790,304/528,233,918.80
  6. Step 6: Final answer
    x = 404,745,376.36

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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.