Home / 1,443,508,909.75-1,991,700,872.21-816,977,337.47

Finding the Fourth Proportional to 1,443,508,909.75, 1,991,700,872.21 and 816,977,337.47

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Solution

The fourth proportional to 1,443,508,909.75, 1,991,700,872.21 and 816,977,337.47 is: 1,127,235,491.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,443,508,909.75 : 1,991,700,872.21 = 816,977,337.47 : x
  2. Step 2: Convert to fraction form
    1,443,508,909.75/1,991,700,872.21 = 816,977,337.47/x
  3. Step 3: Cross multiply
    1,443,508,909.75x = 1,991,700,872.21 × 816,977,337.47
  4. Step 4: Simplify right side
    1,443,508,909.75x = 1,627,174,475,609,780,224
  5. Step 5: Solve for x
    x = 1,627,174,475,609,780,224/1,443,508,909.75
  6. Step 6: Final answer
    x = 1,127,235,491.67

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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.