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Finding the Fourth Proportional to 713,425,064.80, 1,068,862,138.80 and 611,388,392.80

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Solution

The fourth proportional to 713,425,064.80, 1,068,862,138.80 and 611,388,392.80 is: 915,989,551.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,425,064.80 : 1,068,862,138.80 = 611,388,392.80 : x
  2. Step 2: Convert to fraction form
    713,425,064.80/1,068,862,138.80 = 611,388,392.80/x
  3. Step 3: Cross multiply
    713,425,064.80x = 1,068,862,138.80 × 611,388,392.80
  4. Step 4: Simplify right side
    713,425,064.80x = 653,489,905,165,702,400
  5. Step 5: Solve for x
    x = 653,489,905,165,702,400/713,425,064.80
  6. Step 6: Final answer
    x = 915,989,551.54

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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.