Home / 384,601,678.86-530,933,315.22-257,660,934.15

Finding the Fourth Proportional to 384,601,678.86, 530,933,315.22 and 257,660,934.15

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Solution

The fourth proportional to 384,601,678.86, 530,933,315.22 and 257,660,934.15 is: 355,694,687.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,601,678.86 : 530,933,315.22 = 257,660,934.15 : x
  2. Step 2: Convert to fraction form
    384,601,678.86/530,933,315.22 = 257,660,934.15/x
  3. Step 3: Cross multiply
    384,601,678.86x = 530,933,315.22 × 257,660,934.15
  4. Step 4: Simplify right side
    384,601,678.86x = 136,800,773,970,941,616
  5. Step 5: Solve for x
    x = 136,800,773,970,941,616/384,601,678.86
  6. Step 6: Final answer
    x = 355,694,687.49

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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.