Home / 1,245,944,069.20-1,868,916,103.80-518,838,302.80

Finding the Fourth Proportional to 1,245,944,069.20, 1,868,916,103.80 and 518,838,302.80

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Solution

The fourth proportional to 1,245,944,069.20, 1,868,916,103.80 and 518,838,302.80 is: 778,257,454.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,944,069.20 : 1,868,916,103.80 = 518,838,302.80 : x
  2. Step 2: Convert to fraction form
    1,245,944,069.20/1,868,916,103.80 = 518,838,302.80/x
  3. Step 3: Cross multiply
    1,245,944,069.20x = 1,868,916,103.80 × 518,838,302.80
  4. Step 4: Simplify right side
    1,245,944,069.20x = 969,665,259,371,180,672
  5. Step 5: Solve for x
    x = 969,665,259,371,180,672/1,245,944,069.20
  6. Step 6: Final answer
    x = 778,257,454.20

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Double scale
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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.