Home / 426,528,076.70-639,792,115.05-353,826,947.90

Finding the Fourth Proportional to 426,528,076.70, 639,792,115.05 and 353,826,947.90

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Solution

The fourth proportional to 426,528,076.70, 639,792,115.05 and 353,826,947.90 is: 530,740,421.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,528,076.70 : 639,792,115.05 = 353,826,947.90 : x
  2. Step 2: Convert to fraction form
    426,528,076.70/639,792,115.05 = 353,826,947.90/x
  3. Step 3: Cross multiply
    426,528,076.70x = 639,792,115.05 × 353,826,947.90
  4. Step 4: Simplify right side
    426,528,076.70x = 226,375,691,358,627,136
  5. Step 5: Solve for x
    x = 226,375,691,358,627,136/426,528,076.70
  6. Step 6: Final answer
    x = 530,740,421.85

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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.