Home / 658,685,385.21-908,987,211.29-361,330,028.63

Finding the Fourth Proportional to 658,685,385.21, 908,987,211.29 and 361,330,028.63

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Solution

The fourth proportional to 658,685,385.21, 908,987,211.29 and 361,330,028.63 is: 498,636,196.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,685,385.21 : 908,987,211.29 = 361,330,028.63 : x
  2. Step 2: Convert to fraction form
    658,685,385.21/908,987,211.29 = 361,330,028.63/x
  3. Step 3: Cross multiply
    658,685,385.21x = 908,987,211.29 × 361,330,028.63
  4. Step 4: Simplify right side
    658,685,385.21x = 328,444,375,076,077,952
  5. Step 5: Solve for x
    x = 328,444,375,076,077,952/658,685,385.21
  6. Step 6: Final answer
    x = 498,636,196.36

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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.