Home / 648,217,214.88-894,539,800.18-354,861,782.88

Finding the Fourth Proportional to 648,217,214.88, 894,539,800.18 and 354,861,782.88

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Solution

The fourth proportional to 648,217,214.88, 894,539,800.18 and 354,861,782.88 is: 489,709,284.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,217,214.88 : 894,539,800.18 = 354,861,782.88 : x
  2. Step 2: Convert to fraction form
    648,217,214.88/894,539,800.18 = 354,861,782.88/x
  3. Step 3: Cross multiply
    648,217,214.88x = 894,539,800.18 × 354,861,782.88
  4. Step 4: Simplify right side
    648,217,214.88x = 317,437,988,348,993,728
  5. Step 5: Solve for x
    x = 317,437,988,348,993,728/648,217,214.88
  6. Step 6: Final answer
    x = 489,709,284.27

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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.