Home / 921,846,570.61-1,383,223,836.56-430,488,428.43

Finding the Fourth Proportional to 921,846,570.61, 1,383,223,836.56 and 430,488,428.43

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Solution

The fourth proportional to 921,846,570.61, 1,383,223,836.56 and 430,488,428.43 is: 645,944,644.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,846,570.61 : 1,383,223,836.56 = 430,488,428.43 : x
  2. Step 2: Convert to fraction form
    921,846,570.61/1,383,223,836.56 = 430,488,428.43/x
  3. Step 3: Cross multiply
    921,846,570.61x = 1,383,223,836.56 × 430,488,428.43
  4. Step 4: Simplify right side
    921,846,570.61x = 595,461,855,558,561,024
  5. Step 5: Solve for x
    x = 595,461,855,558,561,024/921,846,570.61
  6. Step 6: Final answer
    x = 645,944,644.74

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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.