Home / 858,476,729.80-1,287,715,094.70-720,727,222.60

Finding the Fourth Proportional to 858,476,729.80, 1,287,715,094.70 and 720,727,222.60

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Solution

The fourth proportional to 858,476,729.80, 1,287,715,094.70 and 720,727,222.60 is: 1,081,090,833.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,476,729.80 : 1,287,715,094.70 = 720,727,222.60 : x
  2. Step 2: Convert to fraction form
    858,476,729.80/1,287,715,094.70 = 720,727,222.60/x
  3. Step 3: Cross multiply
    858,476,729.80x = 1,287,715,094.70 × 720,727,222.60
  4. Step 4: Simplify right side
    858,476,729.80x = 928,091,323,703,227,008
  5. Step 5: Solve for x
    x = 928,091,323,703,227,008/858,476,729.80
  6. Step 6: Final answer
    x = 1,081,090,833.90

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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.