Home / 521,915,671.89-720,224,257.10-286,952,352.57

Finding the Fourth Proportional to 521,915,671.89, 720,224,257.10 and 286,952,352.57

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Solution

The fourth proportional to 521,915,671.89, 720,224,257.10 and 286,952,352.57 is: 395,983,596.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,915,671.89 : 720,224,257.10 = 286,952,352.57 : x
  2. Step 2: Convert to fraction form
    521,915,671.89/720,224,257.10 = 286,952,352.57/x
  3. Step 3: Cross multiply
    521,915,671.89x = 720,224,257.10 × 286,952,352.57
  4. Step 4: Simplify right side
    521,915,671.89x = 206,670,044,951,390,752
  5. Step 5: Solve for x
    x = 206,670,044,951,390,752/521,915,671.89
  6. Step 6: Final answer
    x = 395,983,596.74

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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.