Home / 579,313,623.20-868,970,434.80-515,824,138.40

Finding the Fourth Proportional to 579,313,623.20, 868,970,434.80 and 515,824,138.40

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Solution

The fourth proportional to 579,313,623.20, 868,970,434.80 and 515,824,138.40 is: 773,736,207.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,313,623.20 : 868,970,434.80 = 515,824,138.40 : x
  2. Step 2: Convert to fraction form
    579,313,623.20/868,970,434.80 = 515,824,138.40/x
  3. Step 3: Cross multiply
    579,313,623.20x = 868,970,434.80 × 515,824,138.40
  4. Step 4: Simplify right side
    579,313,623.20x = 448,235,925,825,783,360
  5. Step 5: Solve for x
    x = 448,235,925,825,783,360/579,313,623.20
  6. Step 6: Final answer
    x = 773,736,207.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.