Home / 398,700,017.39-550,206,044.94-220,083,952.79

Finding the Fourth Proportional to 398,700,017.39, 550,206,044.94 and 220,083,952.79

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Solution

The fourth proportional to 398,700,017.39, 550,206,044.94 and 220,083,952.79 is: 303,715,866.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,700,017.39 : 550,206,044.94 = 220,083,952.79 : x
  2. Step 2: Convert to fraction form
    398,700,017.39/550,206,044.94 = 220,083,952.79/x
  3. Step 3: Cross multiply
    398,700,017.39x = 550,206,044.94 × 220,083,952.79
  4. Step 4: Simplify right side
    398,700,017.39x = 121,091,521,216,596,560
  5. Step 5: Solve for x
    x = 121,091,521,216,596,560/398,700,017.39
  6. Step 6: Final answer
    x = 303,715,866.41

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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.