Home / 515,578,341.72-773,346,539.25-127,391,396.70

Finding the Fourth Proportional to 515,578,341.72, 773,346,539.25 and 127,391,396.70

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Solution

The fourth proportional to 515,578,341.72, 773,346,539.25 and 127,391,396.70 is: 191,081,912.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,578,341.72 : 773,346,539.25 = 127,391,396.70 : x
  2. Step 2: Convert to fraction form
    515,578,341.72/773,346,539.25 = 127,391,396.70/x
  3. Step 3: Cross multiply
    515,578,341.72x = 773,346,539.25 × 127,391,396.70
  4. Step 4: Simplify right side
    515,578,341.72x = 98,517,695,768,168,880
  5. Step 5: Solve for x
    x = 98,517,695,768,168,880/515,578,341.72
  6. Step 6: Final answer
    x = 191,081,912.87

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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.