Home / 390,891,462.12-586,336,859.10-99,758,562.12

Finding the Fourth Proportional to 390,891,462.12, 586,336,859.10 and 99,758,562.12

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Solution

The fourth proportional to 390,891,462.12, 586,336,859.10 and 99,758,562.12 is: 149,637,757.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,891,462.12 : 586,336,859.10 = 99,758,562.12 : x
  2. Step 2: Convert to fraction form
    390,891,462.12/586,336,859.10 = 99,758,562.12/x
  3. Step 3: Cross multiply
    390,891,462.12x = 586,336,859.10 × 99,758,562.12
  4. Step 4: Simplify right side
    390,891,462.12x = 58,492,121,981,773,040
  5. Step 5: Solve for x
    x = 58,492,121,981,773,040/390,891,462.12
  6. Step 6: Final answer
    x = 149,637,757.92

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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.