Home / 687,148,980-1,029,422,965.59-406,188,744.72

Finding the Fourth Proportional to 687,148,980, 1,029,422,965.59 and 406,188,744.72

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Solution

The fourth proportional to 687,148,980, 1,029,422,965.59 and 406,188,744.72 is: 608,514,360.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,148,980 : 1,029,422,965.59 = 406,188,744.72 : x
  2. Step 2: Convert to fraction form
    687,148,980/1,029,422,965.59 = 406,188,744.72/x
  3. Step 3: Cross multiply
    687,148,980x = 1,029,422,965.59 × 406,188,744.72
  4. Step 4: Simplify right side
    687,148,980x = 418,140,022,178,941,888
  5. Step 5: Solve for x
    x = 418,140,022,178,941,888/687,148,980
  6. Step 6: Final answer
    x = 608,514,360.57

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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.