Home / 425,739,004.20-638,608,506.30-379,822,501.80

Finding the Fourth Proportional to 425,739,004.20, 638,608,506.30 and 379,822,501.80

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Solution

The fourth proportional to 425,739,004.20, 638,608,506.30 and 379,822,501.80 is: 569,733,752.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,739,004.20 : 638,608,506.30 = 379,822,501.80 : x
  2. Step 2: Convert to fraction form
    425,739,004.20/638,608,506.30 = 379,822,501.80/x
  3. Step 3: Cross multiply
    425,739,004.20x = 638,608,506.30 × 379,822,501.80
  4. Step 4: Simplify right side
    425,739,004.20x = 242,557,880,533,627,040
  5. Step 5: Solve for x
    x = 242,557,880,533,627,040/425,739,004.20
  6. Step 6: Final answer
    x = 569,733,752.70

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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.