Home / 1,648,768,068.81-2,474,378,140.86-666,203,151.78

Finding the Fourth Proportional to 1,648,768,068.81, 2,474,378,140.86 and 666,203,151.78

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Solution

The fourth proportional to 1,648,768,068.81, 2,474,378,140.86 and 666,203,151.78 is: 999,800,121.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,648,768,068.81 : 2,474,378,140.86 = 666,203,151.78 : x
  2. Step 2: Convert to fraction form
    1,648,768,068.81/2,474,378,140.86 = 666,203,151.78/x
  3. Step 3: Cross multiply
    1,648,768,068.81x = 2,474,378,140.86 × 666,203,151.78
  4. Step 4: Simplify right side
    1,648,768,068.81x = 1,648,438,516,136,468,736
  5. Step 5: Solve for x
    x = 1,648,438,516,136,468,736/1,648,768,068.81
  6. Step 6: Final answer
    x = 999,800,121.87

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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.