Home / 802,143,007.80-1,205,127,699.30-717,962,753.40

Finding the Fourth Proportional to 802,143,007.80, 1,205,127,699.30 and 717,962,753.40

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Solution

The fourth proportional to 802,143,007.80, 1,205,127,699.30 and 717,962,753.40 is: 1,078,656,539.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    802,143,007.80 : 1,205,127,699.30 = 717,962,753.40 : x
  2. Step 2: Convert to fraction form
    802,143,007.80/1,205,127,699.30 = 717,962,753.40/x
  3. Step 3: Cross multiply
    802,143,007.80x = 1,205,127,699.30 × 717,962,753.40
  4. Step 4: Simplify right side
    802,143,007.80x = 865,236,801,188,035,200
  5. Step 5: Solve for x
    x = 865,236,801,188,035,200/802,143,007.80
  6. Step 6: Final answer
    x = 1,078,656,539.76

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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.