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Finding the Fourth Proportional to 808,510,067.20, 1,210,497,619.20 and 785,835,251.20

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Solution

The fourth proportional to 808,510,067.20, 1,210,497,619.20 and 785,835,251.20 is: 1,176,548,987.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,510,067.20 : 1,210,497,619.20 = 785,835,251.20 : x
  2. Step 2: Convert to fraction form
    808,510,067.20/1,210,497,619.20 = 785,835,251.20/x
  3. Step 3: Cross multiply
    808,510,067.20x = 1,210,497,619.20 × 785,835,251.20
  4. Step 4: Simplify right side
    808,510,067.20x = 951,251,700,661,033,984
  5. Step 5: Solve for x
    x = 951,251,700,661,033,984/808,510,067.20
  6. Step 6: Final answer
    x = 1,176,548,987.15

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1.5x scale

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.