Home / 522,288,407.25-720,757,987.43-287,334,010.89

Finding the Fourth Proportional to 522,288,407.25, 720,757,987.43 and 287,334,010.89

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Solution

The fourth proportional to 522,288,407.25, 720,757,987.43 and 287,334,010.89 is: 396,520,927.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,288,407.25 : 720,757,987.43 = 287,334,010.89 : x
  2. Step 2: Convert to fraction form
    522,288,407.25/720,757,987.43 = 287,334,010.89/x
  3. Step 3: Cross multiply
    522,288,407.25x = 720,757,987.43 × 287,334,010.89
  4. Step 4: Simplify right side
    522,288,407.25x = 207,098,283,407,829,408
  5. Step 5: Solve for x
    x = 207,098,283,407,829,408/522,288,407.25
  6. Step 6: Final answer
    x = 396,520,927.01

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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.