Home / 772,521,952.82-1,066,087,886.16-420,105,601.66

Finding the Fourth Proportional to 772,521,952.82, 1,066,087,886.16 and 420,105,601.66

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Solution

The fourth proportional to 772,521,952.82, 1,066,087,886.16 and 420,105,601.66 is: 579,749,858.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,521,952.82 : 1,066,087,886.16 = 420,105,601.66 : x
  2. Step 2: Convert to fraction form
    772,521,952.82/1,066,087,886.16 = 420,105,601.66/x
  3. Step 3: Cross multiply
    772,521,952.82x = 1,066,087,886.16 × 420,105,601.66
  4. Step 4: Simplify right side
    772,521,952.82x = 447,869,492,837,684,416
  5. Step 5: Solve for x
    x = 447,869,492,837,684,416/772,521,952.82
  6. Step 6: Final answer
    x = 579,749,858.50

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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.