Home / 788,873,942.40-1,088,606,206.72-431,633,987.20

Finding the Fourth Proportional to 788,873,942.40, 1,088,606,206.72 and 431,633,987.20

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Solution

The fourth proportional to 788,873,942.40, 1,088,606,206.72 and 431,633,987.20 is: 595,633,107.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,873,942.40 : 1,088,606,206.72 = 431,633,987.20 : x
  2. Step 2: Convert to fraction form
    788,873,942.40/1,088,606,206.72 = 431,633,987.20/x
  3. Step 3: Cross multiply
    788,873,942.40x = 1,088,606,206.72 × 431,633,987.20
  4. Step 4: Simplify right side
    788,873,942.40x = 469,879,437,497,221,056
  5. Step 5: Solve for x
    x = 469,879,437,497,221,056/788,873,942.40
  6. Step 6: Final answer
    x = 595,633,107.20

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Double scale
Find fourth proportional to 788,873,943.40, 1,088,606,208.10 and 431,633,988.20
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.