Home / 500,608,863.32-690,790,455.36-288,983,871.63

Finding the Fourth Proportional to 500,608,863.32, 690,790,455.36 and 288,983,871.63

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Solution

The fourth proportional to 500,608,863.32, 690,790,455.36 and 288,983,871.63 is: 398,769,008.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,608,863.32 : 690,790,455.36 = 288,983,871.63 : x
  2. Step 2: Convert to fraction form
    500,608,863.32/690,790,455.36 = 288,983,871.63/x
  3. Step 3: Cross multiply
    500,608,863.32x = 690,790,455.36 × 288,983,871.63
  4. Step 4: Simplify right side
    500,608,863.32x = 199,627,300,274,983,488
  5. Step 5: Solve for x
    x = 199,627,300,274,983,488/500,608,863.32
  6. Step 6: Final answer
    x = 398,769,008.91

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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.