Home / 820,423,318.47-1,230,638,133.14-198,637,514.55

Finding the Fourth Proportional to 820,423,318.47, 1,230,638,133.14 and 198,637,514.55

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Solution

The fourth proportional to 820,423,318.47, 1,230,638,133.14 and 198,637,514.55 is: 297,957,035.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,423,318.47 : 1,230,638,133.14 = 198,637,514.55 : x
  2. Step 2: Convert to fraction form
    820,423,318.47/1,230,638,133.14 = 198,637,514.55/x
  3. Step 3: Cross multiply
    820,423,318.47x = 1,230,638,133.14 × 198,637,514.55
  4. Step 4: Simplify right side
    820,423,318.47x = 244,450,900,074,452,192
  5. Step 5: Solve for x
    x = 244,450,900,074,452,192/820,423,318.47
  6. Step 6: Final answer
    x = 297,957,035.80

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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.