Home / 839,815,427.20-1,259,723,140.80-379,768,604.80

Finding the Fourth Proportional to 839,815,427.20, 1,259,723,140.80 and 379,768,604.80

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Solution

The fourth proportional to 839,815,427.20, 1,259,723,140.80 and 379,768,604.80 is: 569,652,907.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,815,427.20 : 1,259,723,140.80 = 379,768,604.80 : x
  2. Step 2: Convert to fraction form
    839,815,427.20/1,259,723,140.80 = 379,768,604.80/x
  3. Step 3: Cross multiply
    839,815,427.20x = 1,259,723,140.80 × 379,768,604.80
  4. Step 4: Simplify right side
    839,815,427.20x = 478,403,299,615,889,984
  5. Step 5: Solve for x
    x = 478,403,299,615,889,984/839,815,427.20
  6. Step 6: Final answer
    x = 569,652,907.20

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Double scale
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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.