Home / 418,843,314.75-578,066,612.69-318,206,146.34

Finding the Fourth Proportional to 418,843,314.75, 578,066,612.69 and 318,206,146.34

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Solution

The fourth proportional to 418,843,314.75, 578,066,612.69 and 318,206,146.34 is: 439,172,221.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,843,314.75 : 578,066,612.69 = 318,206,146.34 : x
  2. Step 2: Convert to fraction form
    418,843,314.75/578,066,612.69 = 318,206,146.34/x
  3. Step 3: Cross multiply
    418,843,314.75x = 578,066,612.69 × 318,206,146.34
  4. Step 4: Simplify right side
    418,843,314.75x = 183,944,349,149,011,904
  5. Step 5: Solve for x
    x = 183,944,349,149,011,904/418,843,314.75
  6. Step 6: Final answer
    x = 439,172,221.86

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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.