Home / 721,358,983.92-1,081,365,315.12-284,663,284.32

Finding the Fourth Proportional to 721,358,983.92, 1,081,365,315.12 and 284,663,284.32

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Solution

The fourth proportional to 721,358,983.92, 1,081,365,315.12 and 284,663,284.32 is: 426,729,283.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,358,983.92 : 1,081,365,315.12 = 284,663,284.32 : x
  2. Step 2: Convert to fraction form
    721,358,983.92/1,081,365,315.12 = 284,663,284.32/x
  3. Step 3: Cross multiply
    721,358,983.92x = 1,081,365,315.12 × 284,663,284.32
  4. Step 4: Simplify right side
    721,358,983.92x = 307,825,002,151,790,912
  5. Step 5: Solve for x
    x = 307,825,002,151,790,912/721,358,983.92
  6. Step 6: Final answer
    x = 426,729,283.22

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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.