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Finding the Fourth Proportional to 623,714,830.88, 860,588,861.72 and 369,269,843.67

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Solution

The fourth proportional to 623,714,830.88, 860,588,861.72 and 369,269,843.67 is: 509,510,915.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,714,830.88 : 860,588,861.72 = 369,269,843.67 : x
  2. Step 2: Convert to fraction form
    623,714,830.88/860,588,861.72 = 369,269,843.67/x
  3. Step 3: Cross multiply
    623,714,830.88x = 860,588,861.72 × 369,269,843.67
  4. Step 4: Simplify right side
    623,714,830.88x = 317,789,514,429,641,344
  5. Step 5: Solve for x
    x = 317,789,514,429,641,344/623,714,830.88
  6. Step 6: Final answer
    x = 509,510,915.40

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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.