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Finding the Fourth Proportional to 704,078,697.20, 1,056,118,045.80 and 643,562,754.80

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Solution

The fourth proportional to 704,078,697.20, 1,056,118,045.80 and 643,562,754.80 is: 965,344,132.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,078,697.20 : 1,056,118,045.80 = 643,562,754.80 : x
  2. Step 2: Convert to fraction form
    704,078,697.20/1,056,118,045.80 = 643,562,754.80/x
  3. Step 3: Cross multiply
    704,078,697.20x = 1,056,118,045.80 × 643,562,754.80
  4. Step 4: Simplify right side
    704,078,697.20x = 679,678,238,949,040,512
  5. Step 5: Solve for x
    x = 679,678,238,949,040,512/704,078,697.20
  6. Step 6: Final answer
    x = 965,344,132.20

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.