Home / 648,217,221.62-894,539,809.55-354,861,789.62

Finding the Fourth Proportional to 648,217,221.62, 894,539,809.55 and 354,861,789.62

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Solution

The fourth proportional to 648,217,221.62, 894,539,809.55 and 354,861,789.62 is: 489,709,293.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,217,221.62 : 894,539,809.55 = 354,861,789.62 : x
  2. Step 2: Convert to fraction form
    648,217,221.62/894,539,809.55 = 354,861,789.62/x
  3. Step 3: Cross multiply
    648,217,221.62x = 894,539,809.55 × 354,861,789.62
  4. Step 4: Simplify right side
    648,217,221.62x = 317,437,997,696,999,936
  5. Step 5: Solve for x
    x = 317,437,997,696,999,936/648,217,221.62
  6. Step 6: Final answer
    x = 489,709,293.60

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1.5x scale

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.