Home / 708,590,956.80-1,062,886,435.20-643,967,731.20

Finding the Fourth Proportional to 708,590,956.80, 1,062,886,435.20 and 643,967,731.20

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Solution

The fourth proportional to 708,590,956.80, 1,062,886,435.20 and 643,967,731.20 is: 965,951,596.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,590,956.80 : 1,062,886,435.20 = 643,967,731.20 : x
  2. Step 2: Convert to fraction form
    708,590,956.80/1,062,886,435.20 = 643,967,731.20/x
  3. Step 3: Cross multiply
    708,590,956.80x = 1,062,886,435.20 × 643,967,731.20
  4. Step 4: Simplify right side
    708,590,956.80x = 684,464,566,198,999,936
  5. Step 5: Solve for x
    x = 684,464,566,198,999,936/708,590,956.80
  6. Step 6: Final answer
    x = 965,951,596.80

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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.