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Finding the Fourth Proportional to 628,369,149.52, 941,906,995.24 and 278,779,854

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Solution

The fourth proportional to 628,369,149.52, 941,906,995.24 and 278,779,854 is: 417,882,855.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,369,149.52 : 941,906,995.24 = 278,779,854 : x
  2. Step 2: Convert to fraction form
    628,369,149.52/941,906,995.24 = 278,779,854/x
  3. Step 3: Cross multiply
    628,369,149.52x = 941,906,995.24 × 278,779,854
  4. Step 4: Simplify right side
    628,369,149.52x = 262,584,694,614,585,888
  5. Step 5: Solve for x
    x = 262,584,694,614,585,888/628,369,149.52
  6. Step 6: Final answer
    x = 417,882,855.67

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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.