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Finding the Fourth Proportional to 425,850, 637,446.32 and 313,656.88

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Solution

The fourth proportional to 425,850, 637,446.32 and 313,656.88 is: 469,506.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,850 : 637,446.32 = 313,656.88 : x
  2. Step 2: Convert to fraction form
    425,850/637,446.32 = 313,656.88/x
  3. Step 3: Cross multiply
    425,850x = 637,446.32 × 313,656.88
  4. Step 4: Simplify right side
    425,850x = 199,939,423,898.68
  5. Step 5: Solve for x
    x = 199,939,423,898.68/425,850
  6. Step 6: Final answer
    x = 469,506.69

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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.