Home / 648,217,216.88-894,539,802.94-354,861,784.88

Finding the Fourth Proportional to 648,217,216.88, 894,539,802.94 and 354,861,784.88

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Solution

The fourth proportional to 648,217,216.88, 894,539,802.94 and 354,861,784.88 is: 489,709,287.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,217,216.88 : 894,539,802.94 = 354,861,784.88 : x
  2. Step 2: Convert to fraction form
    648,217,216.88/894,539,802.94 = 354,861,784.88/x
  3. Step 3: Cross multiply
    648,217,216.88x = 894,539,802.94 × 354,861,784.88
  4. Step 4: Simplify right side
    648,217,216.88x = 317,437,991,117,491,904
  5. Step 5: Solve for x
    x = 317,437,991,117,491,904/648,217,216.88
  6. Step 6: Final answer
    x = 489,709,287.03

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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.