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Finding the Fourth Proportional to 478,522.99, 660,489.07 and 282,461.85

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Solution

The fourth proportional to 478,522.99, 660,489.07 and 282,461.85 is: 389,872.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,522.99 : 660,489.07 = 282,461.85 : x
  2. Step 2: Convert to fraction form
    478,522.99/660,489.07 = 282,461.85/x
  3. Step 3: Cross multiply
    478,522.99x = 660,489.07 × 282,461.85
  4. Step 4: Simplify right side
    478,522.99x = 186,562,964,616.98
  5. Step 5: Solve for x
    x = 186,562,964,616.98/478,522.99
  6. Step 6: Final answer
    x = 389,872.52

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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.