Home / 1,279,425,548.56-1,765,725,606.92-777,518,496.40

Finding the Fourth Proportional to 1,279,425,548.56, 1,765,725,606.92 and 777,518,496.40

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Solution

The fourth proportional to 1,279,425,548.56, 1,765,725,606.92 and 777,518,496.40 is: 1,073,047,447.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,425,548.56 : 1,765,725,606.92 = 777,518,496.40 : x
  2. Step 2: Convert to fraction form
    1,279,425,548.56/1,765,725,606.92 = 777,518,496.40/x
  3. Step 3: Cross multiply
    1,279,425,548.56x = 1,765,725,606.92 × 777,518,496.40
  4. Step 4: Simplify right side
    1,279,425,548.56x = 1,372,884,318,947,415,808
  5. Step 5: Solve for x
    x = 1,372,884,318,947,415,808/1,279,425,548.56
  6. Step 6: Final answer
    x = 1,073,047,447.34

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.