Home / 708,217,448.75-977,295,839.23-390,681,367.41

Finding the Fourth Proportional to 708,217,448.75, 977,295,839.23 and 390,681,367.41

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Solution

The fourth proportional to 708,217,448.75, 977,295,839.23 and 390,681,367.41 is: 539,115,882.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,217,448.75 : 977,295,839.23 = 390,681,367.41 : x
  2. Step 2: Convert to fraction form
    708,217,448.75/977,295,839.23 = 390,681,367.41/x
  3. Step 3: Cross multiply
    708,217,448.75x = 977,295,839.23 × 390,681,367.41
  4. Step 4: Simplify right side
    708,217,448.75x = 381,811,274,833,503,232
  5. Step 5: Solve for x
    x = 381,811,274,833,503,232/708,217,448.75
  6. Step 6: Final answer
    x = 539,115,882.43

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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.