Home / 384,612,989.69-530,767,773.47-208,400,938.33

Finding the Fourth Proportional to 384,612,989.69, 530,767,773.47 and 208,400,938.33

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Solution

The fourth proportional to 384,612,989.69, 530,767,773.47 and 208,400,938.33 is: 287,594,296.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,612,989.69 : 530,767,773.47 = 208,400,938.33 : x
  2. Step 2: Convert to fraction form
    384,612,989.69/530,767,773.47 = 208,400,938.33/x
  3. Step 3: Cross multiply
    384,612,989.69x = 530,767,773.47 × 208,400,938.33
  4. Step 4: Simplify right side
    384,612,989.69x = 110,612,502,026,472,896
  5. Step 5: Solve for x
    x = 110,612,502,026,472,896/384,612,989.69
  6. Step 6: Final answer
    x = 287,594,296.06

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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.