Home / 384,612,990.69-530,767,774.85-208,400,939.33

Finding the Fourth Proportional to 384,612,990.69, 530,767,774.85 and 208,400,939.33

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Solution

The fourth proportional to 384,612,990.69, 530,767,774.85 and 208,400,939.33 is: 287,594,297.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,612,990.69 : 530,767,774.85 = 208,400,939.33 : x
  2. Step 2: Convert to fraction form
    384,612,990.69/530,767,774.85 = 208,400,939.33/x
  3. Step 3: Cross multiply
    384,612,990.69x = 530,767,774.85 × 208,400,939.33
  4. Step 4: Simplify right side
    384,612,990.69x = 110,612,502,844,833,968
  5. Step 5: Solve for x
    x = 110,612,502,844,833,968/384,612,990.69
  6. Step 6: Final answer
    x = 287,594,297.44

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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.