Home / 638,396,777.59-880,987,155.14-345,041,345.59

Finding the Fourth Proportional to 638,396,777.59, 880,987,155.14 and 345,041,345.59

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Solution

The fourth proportional to 638,396,777.59, 880,987,155.14 and 345,041,345.59 is: 476,156,841.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,396,777.59 : 880,987,155.14 = 345,041,345.59 : x
  2. Step 2: Convert to fraction form
    638,396,777.59/880,987,155.14 = 345,041,345.59/x
  3. Step 3: Cross multiply
    638,396,777.59x = 880,987,155.14 × 345,041,345.59
  4. Step 4: Simplify right side
    638,396,777.59x = 303,976,993,457,011,648
  5. Step 5: Solve for x
    x = 303,976,993,457,011,648/638,396,777.59
  6. Step 6: Final answer
    x = 476,156,841.84

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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.