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Finding the Fourth Proportional to 637,975,312.80, 956,962,969.20 and 228,978,319.20

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Solution

The fourth proportional to 637,975,312.80, 956,962,969.20 and 228,978,319.20 is: 343,467,478.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,975,312.80 : 956,962,969.20 = 228,978,319.20 : x
  2. Step 2: Convert to fraction form
    637,975,312.80/956,962,969.20 = 228,978,319.20/x
  3. Step 3: Cross multiply
    637,975,312.80x = 956,962,969.20 × 228,978,319.20
  4. Step 4: Simplify right side
    637,975,312.80x = 219,123,772,224,057,376
  5. Step 5: Solve for x
    x = 219,123,772,224,057,376/637,975,312.80
  6. Step 6: Final answer
    x = 343,467,478.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.