Home / 1,279,425,530.52-1,765,725,582.06-777,518,478.36

Finding the Fourth Proportional to 1,279,425,530.52, 1,765,725,582.06 and 777,518,478.36

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Solution

The fourth proportional to 1,279,425,530.52, 1,765,725,582.06 and 777,518,478.36 is: 1,073,047,422.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,425,530.52 : 1,765,725,582.06 = 777,518,478.36 : x
  2. Step 2: Convert to fraction form
    1,279,425,530.52/1,765,725,582.06 = 777,518,478.36/x
  3. Step 3: Cross multiply
    1,279,425,530.52x = 1,765,725,582.06 × 777,518,478.36
  4. Step 4: Simplify right side
    1,279,425,530.52x = 1,372,884,267,764,616,448
  5. Step 5: Solve for x
    x = 1,372,884,267,764,616,448/1,279,425,530.52
  6. Step 6: Final answer
    x = 1,073,047,422.47

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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.