Home / 1,245,964,086.70-1,868,946,130.05-518,858,320.30

Finding the Fourth Proportional to 1,245,964,086.70, 1,868,946,130.05 and 518,858,320.30

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Solution

The fourth proportional to 1,245,964,086.70, 1,868,946,130.05 and 518,858,320.30 is: 778,287,480.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,964,086.70 : 1,868,946,130.05 = 518,858,320.30 : x
  2. Step 2: Convert to fraction form
    1,245,964,086.70/1,868,946,130.05 = 518,858,320.30/x
  3. Step 3: Cross multiply
    1,245,964,086.70x = 1,868,946,130.05 × 518,858,320.30
  4. Step 4: Simplify right side
    1,245,964,086.70x = 969,718,249,768,928,384
  5. Step 5: Solve for x
    x = 969,718,249,768,928,384/1,245,964,086.70
  6. Step 6: Final answer
    x = 778,287,480.45

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Double scale
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Similar ratio
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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.