Home / 384,779,708.69-530,981,772.39-208,563,920.64

Finding the Fourth Proportional to 384,779,708.69, 530,981,772.39 and 208,563,920.64

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Solution

The fourth proportional to 384,779,708.69, 530,981,772.39 and 208,563,920.64 is: 287,810,499.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,779,708.69 : 530,981,772.39 = 208,563,920.64 : x
  2. Step 2: Convert to fraction form
    384,779,708.69/530,981,772.39 = 208,563,920.64/x
  3. Step 3: Cross multiply
    384,779,708.69x = 530,981,772.39 × 208,563,920.64
  4. Step 4: Simplify right side
    384,779,708.69x = 110,743,640,238,034,496
  5. Step 5: Solve for x
    x = 110,743,640,238,034,496/384,779,708.69
  6. Step 6: Final answer
    x = 287,810,499.71

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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.