Home / 772,626,891.20-1,158,542,205.60-287,703,089.60

Finding the Fourth Proportional to 772,626,891.20, 1,158,542,205.60 and 287,703,089.60

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Solution

The fourth proportional to 772,626,891.20, 1,158,542,205.60 and 287,703,089.60 is: 431,406,382.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,626,891.20 : 1,158,542,205.60 = 287,703,089.60 : x
  2. Step 2: Convert to fraction form
    772,626,891.20/1,158,542,205.60 = 287,703,089.60/x
  3. Step 3: Cross multiply
    772,626,891.20x = 1,158,542,205.60 × 287,703,089.60
  4. Step 4: Simplify right side
    772,626,891.20x = 333,316,171,983,118,400
  5. Step 5: Solve for x
    x = 333,316,171,983,118,400/772,626,891.20
  6. Step 6: Final answer
    x = 431,406,382.28

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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.