Home / 648,217,215.88-894,539,801.56-354,861,783.88

Finding the Fourth Proportional to 648,217,215.88, 894,539,801.56 and 354,861,783.88

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Solution

The fourth proportional to 648,217,215.88, 894,539,801.56 and 354,861,783.88 is: 489,709,285.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,217,215.88 : 894,539,801.56 = 354,861,783.88 : x
  2. Step 2: Convert to fraction form
    648,217,215.88/894,539,801.56 = 354,861,783.88/x
  3. Step 3: Cross multiply
    648,217,215.88x = 894,539,801.56 × 354,861,783.88
  4. Step 4: Simplify right side
    648,217,215.88x = 317,437,989,733,242,752
  5. Step 5: Solve for x
    x = 317,437,989,733,242,752/648,217,215.88
  6. Step 6: Final answer
    x = 489,709,285.65

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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.