Home / 816,729,140.20-1,225,572,007.20-299,211,894.40

Finding the Fourth Proportional to 816,729,140.20, 1,225,572,007.20 and 299,211,894.40

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Solution

The fourth proportional to 816,729,140.20, 1,225,572,007.20 and 299,211,894.40 is: 448,993,067.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,729,140.20 : 1,225,572,007.20 = 299,211,894.40 : x
  2. Step 2: Convert to fraction form
    816,729,140.20/1,225,572,007.20 = 299,211,894.40/x
  3. Step 3: Cross multiply
    816,729,140.20x = 1,225,572,007.20 × 299,211,894.40
  4. Step 4: Simplify right side
    816,729,140.20x = 366,705,721,997,922,432
  5. Step 5: Solve for x
    x = 366,705,721,997,922,432/816,729,140.20
  6. Step 6: Final answer
    x = 448,993,067.53

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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.