Home / 605,217,385.20-907,826,077.80-398,593,124.40

Finding the Fourth Proportional to 605,217,385.20, 907,826,077.80 and 398,593,124.40

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Solution

The fourth proportional to 605,217,385.20, 907,826,077.80 and 398,593,124.40 is: 597,889,686.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,217,385.20 : 907,826,077.80 = 398,593,124.40 : x
  2. Step 2: Convert to fraction form
    605,217,385.20/907,826,077.80 = 398,593,124.40/x
  3. Step 3: Cross multiply
    605,217,385.20x = 907,826,077.80 × 398,593,124.40
  4. Step 4: Simplify right side
    605,217,385.20x = 361,853,232,762,099,456
  5. Step 5: Solve for x
    x = 361,853,232,762,099,456/605,217,385.20
  6. Step 6: Final answer
    x = 597,889,686.60

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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.