Home / 715,824,830.69-987,822,781.28-414,422,853.42

Finding the Fourth Proportional to 715,824,830.69, 987,822,781.28 and 414,422,853.42

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Solution

The fourth proportional to 715,824,830.69, 987,822,781.28 and 414,422,853.42 is: 571,894,572.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,824,830.69 : 987,822,781.28 = 414,422,853.42 : x
  2. Step 2: Convert to fraction form
    715,824,830.69/987,822,781.28 = 414,422,853.42/x
  3. Step 3: Cross multiply
    715,824,830.69x = 987,822,781.28 × 414,422,853.42
  4. Step 4: Simplify right side
    715,824,830.69x = 409,376,335,694,524,416
  5. Step 5: Solve for x
    x = 409,376,335,694,524,416/715,824,830.69
  6. Step 6: Final answer
    x = 571,894,572.73

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1.5x scale

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.