Home / 1,272,108,176.36-1,908,186,177.33-398,690,207.27

Finding the Fourth Proportional to 1,272,108,176.36, 1,908,186,177.33 and 398,690,207.27

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Solution

The fourth proportional to 1,272,108,176.36, 1,908,186,177.33 and 398,690,207.27 is: 598,042,805.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,108,176.36 : 1,908,186,177.33 = 398,690,207.27 : x
  2. Step 2: Convert to fraction form
    1,272,108,176.36/1,908,186,177.33 = 398,690,207.27/x
  3. Step 3: Cross multiply
    1,272,108,176.36x = 1,908,186,177.33 × 398,690,207.27
  4. Step 4: Simplify right side
    1,272,108,176.36x = 760,775,142,549,446,656
  5. Step 5: Solve for x
    x = 760,775,142,549,446,656/1,272,108,176.36
  6. Step 6: Final answer
    x = 598,042,805.39

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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.