Home / 500,712,954.03-690,892,511.99-288,942,527.81

Finding the Fourth Proportional to 500,712,954.03, 690,892,511.99 and 288,942,527.81

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Solution

The fourth proportional to 500,712,954.03, 690,892,511.99 and 288,942,527.81 is: 398,687,965.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,712,954.03 : 690,892,511.99 = 288,942,527.81 : x
  2. Step 2: Convert to fraction form
    500,712,954.03/690,892,511.99 = 288,942,527.81/x
  3. Step 3: Cross multiply
    500,712,954.03x = 690,892,511.99 × 288,942,527.81
  4. Step 4: Simplify right side
    500,712,954.03x = 199,628,228,854,492,160
  5. Step 5: Solve for x
    x = 199,628,228,854,492,160/500,712,954.03
  6. Step 6: Final answer
    x = 398,687,965.33

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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.